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electric stun fish
I seem to remember a guy getting in trouble for fishin' crappie with
electricity... I've got a large koi pond that has way too may fish. Many of them are not desirable color. (Offspring tend to revert back toward a carp like fish) I'd like to net out as many as I can and then kill off the rest before I restock. Can it be done with electricity? How? other ideas? Karl |
electric stun fish
"Karl Townsend" wrote in message ews.com... I seem to remember a guy getting in trouble for fishin' crappie with electricity... I've got a large koi pond that has way too may fish. Many of them are not desirable color. (Offspring tend to revert back toward a carp like fish) I'd like to net out as many as I can and then kill off the rest before I restock. Can it be done with electricity? How? other ideas? Karl Be careful, dangerous stuff electric fishing. "100–600 V (pulsed DC selectable in 100 V steps)" http://www.niwa.cri.nz/rc/instrumentsystems/efish |
electric stun fish
Be careful, dangerous stuff electric fishing. "100–600 V (pulsed DC
selectable in 100 V steps)" http://www.niwa.cri.nz/rc/instrumentsystems/efish I'm not even going to ask their price. I can see its too expensive. Anybody know how to make one of these? Karl |
electric stun fish
In article s.com,
"Karl Townsend" wrote: Be careful, dangerous stuff electric fishing. "100–600 V (pulsed DC selectable in 100 V steps)" http://www.niwa.cri.nz/rc/instrumentsystems/efish I'm not even going to ask their price. I can see its too expensive. Anybody know how to make one of these? The classic fish shocker was a hand-cranked telephone ring generator. Puts out ~100 volts at ~20Hz when cranked. They were a very common military surplus item, having been used for field phones. I recall seeing one advertised in the last year, although I was not looking. Joe Gwinn |
electric stun fish
Karl Townsend wrote:
I seem to remember a guy getting in trouble for fishin' crappie with electricity... I've got a large koi pond that has way too may fish. Many of them are not desirable color. (Offspring tend to revert back toward a carp like fish) I'd like to net out as many as I can and then kill off the rest before I restock. Can it be done with electricity? How? other ideas? Karl A friend of mine in PA worked for the fish comish. for many years. He used to go out and do fish shocking to do population studies. They didn't kill only stun the fish but then could net and measure etc. I helped him with some of the electrical controls etc. Wadding a crick pulling a boat with a generator never sounded like fun to me. :-) ...lew... |
electric stun fish
He used to go out and do fish shocking to do population studies. They didn't kill only stun the fish but then could net and measure etc. I helped him with some of the electrical controls .... From what I've learned so far, it looks like someplace in a range of 100 to 600 volts does the job. I see the commercial unit is pulsed DC. Apparently the field telephone is 100 volt hi frequncy AC. So, would plain old house 110, or 220, likely work? Also it would be easy to step it up to 440 with a transformer. Or, if it should be DC, just add a rectifier. Karl |
electric stun fish
"Karl Townsend" fired this volley in
ews.com: From what I've learned so far, it looks like someplace in a range of 100 to 600 volts does the job. I see the commercial unit is pulsed DC. Apparently the field telephone is 100 volt hi frequncy AC. Ideally, 90v @ 20hz. That's far from "hi frequncy AC". We did some experimentation with various frequencies when I was diving with SubArc in Florida in the '60s. (freshwater only) Some fish are attracted by various frequencies up to low-audio. Some are repelled. Almost none will voluntarily swim into stun range of a continuous signal. Most seem best stunned by DC pulses or low-frequency AC. The range ain't far. A fish that will be thoroughly stunned four feet from the electrodes won't be fazed eight feet away (but will react to the shock by going away from it). Apparently, they possess the ability to discern the direction from which the shock is coming. LLoyd |
electric stun fish
Karl Townsend wrote:
I seem to remember a guy getting in trouble for fishin' crappie with electricity... I've got a large koi pond that has way too may fish. Many of them are not desirable color. (Offspring tend to revert back toward a carp like fish) I'd like to net out as many as I can and then kill off the rest before I restock. Can it be done with electricity? How? other ideas? Karl I thnk the DNR uses some kind of poison to kill off ponds etc. for restocking. It obviously "goes away" soon after the fish are dead. RR |
electric stun fish
Roetnone.
http://hgic.clemson.edu/factsheets/HGIC1713.htm http://news.dnr.state.mn.us/index.ph...-mid-november/ Randy Replogle wrote: Karl Townsend wrote: I seem to remember a guy getting in trouble for fishin' crappie with electricity... I've got a large koi pond that has way too may fish. Many of them are not desirable color. (Offspring tend to revert back toward a carp like fish) I'd like to net out as many as I can and then kill off the rest before I restock. Can it be done with electricity? How? other ideas? Karl I thnk the DNR uses some kind of poison to kill off ponds etc. for restocking. It obviously "goes away" soon after the fish are dead. RR |
electric stun fish
"Joseph Gwinn" wrote in message ... In article s.com, "Karl Townsend" wrote: Be careful, dangerous stuff electric fishing. "100-600 V (pulsed DC selectable in 100 V steps)" http://www.niwa.cri.nz/rc/instrumentsystems/efish I'm not even going to ask their price. I can see its too expensive. Anybody know how to make one of these? The classic fish shocker was a hand-cranked telephone ring generator. Puts out ~100 volts at ~20Hz when cranked. They were a very common military surplus item, having been used for field phones. I recall seeing one advertised in the last year, although I was not looking. Joe Gwinn Talking of mil-surplus, my father and his fellow squaddies in the UK Royal Engineers used to fish in Ireland during WW2 using gun-cotton. He was there looking after the mustard gas (which of course we didn't have), he also trained special forces in demolition. Apparently, a standard slab of gun-cotton (about the size of a paperback book) left hanging in the flue of the stoves used in the army huts was the usual way of showing one's displeasure with the occupants. |
electric stun fish
Roetnone. http://hgic.clemson.edu/factsheets/HGIC1713.htm Sounded good till i read 1 -3 weeks before restock. Karl |
electric stun fish
"Karl Townsend" wrote in message ews.com... Roetnone. http://hgic.clemson.edu/factsheets/HGIC1713.htm Sounded good till i read 1 -3 weeks before restock. Karl Well, you may still want to keep it in mind. You'll do well to get some homemade electric shock system together and working right in less time. They use electric shock around here for counting fish. My impression is that it's kind of a big ordeal. I saw them use it once on the Millstone River and it was not a simple setup. Of course, they were doing something a little different. Anyway, good luck. -- Ed Huntress |
electric stun fish
"Karl Townsend" wrote in message ews.com... Roetnone. http://hgic.clemson.edu/factsheets/HGIC1713.htm Sounded good till i read 1 -3 weeks before restock. Karl How long would it take for Clorox to go away? |
electric stun fish
Karl Townsend wrote:
He used to go out and do fish shocking to do population studies. They didn't kill only stun the fish but then could net and measure etc. I helped him with some of the electrical controls ... From what I've learned so far, it looks like someplace in a range of 100 to 600 volts does the job. I see the commercial unit is pulsed DC. Apparently the field telephone is 100 volt hi frequncy AC. So, would plain old house 110, or 220, likely work? Also it would be easy to step it up to 440 with a transformer. Or, if it should be DC, just add a rectifier. Karl If you want me to try and contact him and get the particulars I'll see if I can. Dont have an e-mail for him right now but could try a phone call. I don't comunicate well on a phone. (hearing is bad) ...lew... |
electric stun fish
On Mon, 26 May 2008 06:31:08 -0500, "Karl Townsend"
wrote: I seem to remember a guy getting in trouble for fishin' crappie with electricity... I've got a large koi pond that has way too may fish. Many of them are not desirable color. (Offspring tend to revert back toward a carp like fish) I'd like to net out as many as I can and then kill off the rest before I restock. Can it be done with electricity? How? other ideas? Karl I'm surprised a big apple grower like you ain't thinking of the tax angle. Have a fishing tournament for scout troops or special needs kids and take a tax deduct. :) --Andy Asberry-- ------Texas----- |
electric stun fish
On Mon, 26 May 2008 10:07:46 -0500, "Karl Townsend"
wrote: Be careful, dangerous stuff electric fishing. "100–600 V (pulsed DC selectable in 100 V steps)" http://www.niwa.cri.nz/rc/instrumentsystems/efish I'm not even going to ask their price. I can see its too expensive. Anybody know how to make one of these? Karl Think I could contrive one, don't think I will. You might try a plasma cutter. They put out about 180 OCV. |
electric stun fish
If you want me to try and contact him and get the particulars I'll see if I can. Dont have an e-mail for him right now but could try a phone call. I don't comunicate well on a phone. (hearing is bad) ...lew... Oh MAN. I'm in the same boat on the hearing thing. Gettin' old ain't for pussies. If you get a hold of him, let me know. Don't sweat it, I'm a metal mangler, not a EE. probably couldn't build what he described. I touched 440, ONCE. I'm going to give the fish that. If that don't work, I'll try the rotenone pesticide. Karl |
electric stun fish
You might try a plasma cutter. They put out about 180 OCV. I LIKE THAT. I don't have a plasma. I'm telling Julie, "Don said I got to have a plasma to clean up the fish pond for you". It would work, but I just got a HUGE milling machine. Conversation around the table is now focused on what would be the best new flooring for the kitchen. I know better than to start talk about my next toy before this is done. Karl |
electric stun fish
"Karl Townsend" wrote in message anews.com... If you want me to try and contact him and get the particulars I'll see if I can. Dont have an e-mail for him right now but could try a phone call. I don't comunicate well on a phone. (hearing is bad) ...lew... Oh MAN. I'm in the same boat on the hearing thing. Gettin' old ain't for pussies. If you get a hold of him, let me know. Don't sweat it, I'm a metal mangler, not a EE. probably couldn't build what he described. I touched 440, ONCE. I'm going to give the fish that. If that don't work, I'll try the rotenone pesticide. Karl Oil of cloves may be useful - an might not contaminate your pond for as long as the pesticide. Your post got me interested and google gave me back the link below: http://www.wisegeek.com/what-is-the-...ize-a-fish.htm |
electric stun fish
Karl Townsend wrote:
If you want me to try and contact him and get the particulars I'll see if I can. Dont have an e-mail for him right now but could try a phone call. I don't comunicate well on a phone. (hearing is bad) ...lew... Oh MAN. I'm in the same boat on the hearing thing. Gettin' old ain't for pussies. If you get a hold of him, let me know. Don't sweat it, I'm a metal mangler, not a EE. probably couldn't build what he described. I touched 440, ONCE. I'm going to give the fish that. If that don't work, I'll try the rotenone pesticide. Karl You might try asking the Fish and Wildlife types, or perhaps the state agronomists what works to stun or clear out a fish pond. Hmm. Book says rotenone, or quicklime. IIRC, rotenone interferes with the fishes ability to get oxygen from the water, and Koi, being carp, are pretty good at breathing air if they have to. Worst case is it drives them all to the surface, where they are easier to net. Also, if the drainage goes into any natural watershed, there could be expensive consequences. Maybe not an issue. Done some reading on fish farming, as a result of having a 15 acre pond that we built on the farm, and there was a lot said about harvesting carp of various types. IIRC, mostly, they would herd them to one end of the pond and net them, or draw down the water levels, and do same. Went and dug out the book. The Freshwater Aquaculture Book, by William McLarney. Good book, easy to read writing style, and LOTS of information. Cheers Trevor Jones |
electric stun fish
Karl Townsend wrote: I seem to remember a guy getting in trouble for fishin' crappie with electricity... I've got a large koi pond that has way too may fish. Many of them are not desirable color. (Offspring tend to revert back toward a carp like fish) I'd like to net out as many as I can and then kill off the rest before I restock. Can it be done with electricity? How? other ideas? Karl This may be a dumb question and eliminate the fun of building a fish stun gun, but wouldn't it be simpler, easier and more desirable to mostly drain the pond, sweep the flopping fish to one low spot with a broom and then sort out the keepers? You should probably be restarting with a sizable water change anyway, and if you really wanted, you could pump the water into a holding tank(s) for later return. |
electric stun fish
"Pete C." wrote in message ... Karl Townsend wrote: I seem to remember a guy getting in trouble for fishin' crappie with electricity... I've got a large koi pond that has way too may fish. Many of them are not desirable color. (Offspring tend to revert back toward a carp like fish) I'd like to net out as many as I can and then kill off the rest before I restock. Can it be done with electricity? How? other ideas? Karl This may be a dumb question and eliminate the fun of building a fish stun gun, but wouldn't it be simpler, easier and more desirable to mostly drain the pond, sweep the flopping fish to one low spot with a broom and then sort out the keepers? You should probably be restarting with a sizable water change anyway, and if you really wanted, you could pump the water into a holding tank(s) for later return. I should pint out that very little rotenone will kill an entire stream. It has happened a few times in British Columbia.The stuff is just a the ground up leaves of a South American plant, and is safe for humans. You don't want to have the stuff getting into fresh water streams. Steve R. -- Reply address munged to bugger up spammers |
Smells like a Darwin, NOT broiled fish.
Karl Townsend wrote in article s.com... Be careful, dangerous stuff electric fishing. "100–600 V (pulsed DC selectable in 100 V steps)" http://www.niwa.cri.nz/rc/instrumentsystems/efish I'm not even going to ask their price. I can see its too expensive. Anybody know how to make one of these? Karl Let's see...... Water..... Electricity...... And a home-made device to energize the water with the electricity............ I didn't realize it was Darwin Awards time already...... |
Smells like a Darwin, NOT broiled fish.
"*" wrote in message news:01c8c0d3$29d1b1e0$6490c3d8@race... Karl Townsend wrote in article s.com... Be careful, dangerous stuff electric fishing. "100-600 V (pulsed DC selectable in 100 V steps)" http://www.niwa.cri.nz/rc/instrumentsystems/efish I'm not even going to ask their price. I can see its too expensive. Anybody know how to make one of these? Karl Let's see...... Water..... Electricity...... And a home-made device to energize the water with the electricity............ I didn't realize it was Darwin Awards time already...... AND...an aluminum boat...only kidding...I hope -- Ed Huntress |
Smells like a Darwin, NOT broiled fish.
On May 28, 10:04 am, "Ed Huntress" wrote:
"*" wrote in message news:01c8c0d3$29d1b1e0$6490c3d8@race... Let's see...... Water..... Electricity...... And a home-made device to energize the water with the electricity............ I didn't realize it was Darwin Awards time already...... AND...an aluminum boat...only kidding...I hope -- Ed Huntress Ed is it not the boat being at Neutral potential (anode), and the insulated pole with a leader wire hanging down (cathode), that "zaps" the water? ignator |
Smells like a Darwin, NOT broiled fish.
"ignator" wrote in message ... On May 28, 10:04 am, "Ed Huntress" wrote: "*" wrote in message news:01c8c0d3$29d1b1e0$6490c3d8@race... Let's see...... Water..... Electricity...... And a home-made device to energize the water with the electricity............ I didn't realize it was Darwin Awards time already...... AND...an aluminum boat...only kidding...I hope -- Ed Huntress Ed is it not the boat being at Neutral potential (anode), and the insulated pole with a leader wire hanging down (cathode), that "zaps" the water? ignator 'Ya got me. -- Ed Huntress |
electric stun fish
http://www.niwa.cri.nz/rc/instrumentsystems/efish I'm not even going to ask their price. I can see its too expensive. Anybody know how to make one of these? Karl How 'bout the transformer for igniting an oil furnace??? I dunno, 110v input probably 'bout 12,000 out??? Electrode on each side of the pond..... Ken. |
electric stun fish
In article ,
Ken Sterling wrote: http://www.niwa.cri.nz/rc/instrumentsystems/efish I'm not even going to ask their price. I can see its too expensive. Anybody know how to make one of these? Karl How 'bout the transformer for igniting an oil furnace??? I dunno, 110v input probably 'bout 12,000 out??? Electrode on each side of the pond..... Ken. How about an ignition coil from a car? Cheap and will work with 12 vdc. Just add a vibrator to the input or do it manually Free men own guns - www(dot)geocities(dot)com/CapitolHill/5357/ ** Posted from http://www.teranews.com ** |
electric stun fish
On May 26, 3:17 pm, "newshound" wrote:
"Joseph Gwinn" wrote in message ... In article s.com, "Karl Townsend" wrote: Be careful, dangerous stuff electric fishing. "100-600 V (pulsed DC selectable in 100 V steps)" http://www.niwa.cri.nz/rc/instrumentsystems/efish I'm not even going to ask their price. I can see its too expensive. Anybody know how to make one of these? The classic fish shocker was a hand-cranked telephone ring generator. Puts out ~100 volts at ~20Hz when cranked. They were a very common military surplus item, having been used for field phones. I recall seeing one advertised in the last year, although I was not looking. Joe Gwinn Talking of mil-surplus, my father and his fellow squaddies in the UK Royal Engineers used to fish in Ireland during WW2 using gun-cotton. He was there looking after the mustard gas (which of course we didn't have), he also trained special forces in demolition. Apparently, a standard slab of gun-cotton (about the size of a paperback book) left hanging in the flue of the stoves used in the army huts was the usual way of showing one's displeasure with the occupants. Seeing as how the guncotton would not explode, but would 'burn quickly' (deflagration), I have to assume something about its decomposition must have been dramatic, else it would go unnoticed. Lotsa flames? Lotsa sparks? maybe a stiong pulse of gas that would blow the stove contents out the front of the stove? Dave |
electric stun fish
"nick hull" wrote in message ... In article , Ken Sterling wrote: http://www.niwa.cri.nz/rc/instrumentsystems/efish I'm not even going to ask their price. I can see its too expensive. Anybody know how to make one of these? Karl How 'bout the transformer for igniting an oil furnace??? I dunno, 110v input probably 'bout 12,000 out??? Electrode on each side of the pond..... Ken. How about an ignition coil from a car? Cheap and will work with 12 vdc. Just add a vibrator to the input or do it manually Free men own guns - www(dot)geocities(dot)com/CapitolHill/5357/ ** Posted from http://www.teranews.com ** How about if you just take two aluminum boats, clamp a long jumper cable to each one, and run a long extension cord to a 440 V transformer? You'd need rubber floor mat and seat cushion for each boat, of course. And a couple of wooden oars to make sure the boats don't touch. You might want to check the fillings in your teeth, too, to make sure you don't still have some old silver ones in there...and be sure your life insurance benefits still are assigned to the right person... d8-) -- Ed Huntress |
electric stun fish
"nick hull" wrote in message ... In article , Ken Sterling wrote: http://www.niwa.cri.nz/rc/instrumentsystems/efish I'm not even going to ask their price. I can see its too expensive. Anybody know how to make one of these? Karl How 'bout the transformer for igniting an oil furnace??? I dunno, 110v input probably 'bout 12,000 out??? Electrode on each side of the pond..... Ken. How about an ignition coil from a car? Cheap and will work with 12 vdc. Just add a vibrator to the input or do it manually Free men own guns - www(dot)geocities(dot)com/CapitolHill/5357/ ** Posted from http://www.teranews.com ** How about if you just take two aluminum boats, clamp a long jumper cable to each one, and run a long extension cord to a 440 V transformer? You'd need rubber floor mat and seat cushion for each boat, of course. And a couple of wooden oars to make sure the boats don't touch. You might want to check the fillings in your teeth, too, to make sure you don't still have some old silver ones in there...and be sure your life insurance benefits still are assigned to the right person... d8-) G Hint of sarcasism noted..... Ken. |
electric stun fish
"Ken Sterling" wrote in message ... How about if you just take two aluminum boats, clamp a long jumper cable to each one, and run a long extension cord to a 440 V transformer? You'd need rubber floor mat and seat cushion for each boat, of course. And a couple of wooden oars to make sure the boats don't touch. You might want to check the fillings in your teeth, too, to make sure you don't still have some old silver ones in there...and be sure your life insurance benefits still are assigned to the right person... d8-) G Hint of sarcasism noted..... Ken. I sure don't want to spoil anyone's fun, Ken, but I want to know where your pond is, so there's no chance I ever go near it by mistake... The electrical ideas we've seen here really give me the willies. And just think, if you'd just dumped in some rotenone when this thread started, you'd be halfway to restocking by now. There are reasons that fish and game departments all over the country use the stuff for killing off the fish in ponds. It's safe, it's easy, and it works. d8-) -- Ed Huntress |
electric stun fish
"Ken Sterling" wrote in message .. . How about if you just take two aluminum boats, clamp a long jumper cable to each one, and run a long extension cord to a 440 V transformer? You'd need rubber floor mat and seat cushion for each boat, of course. And a couple of wooden oars to make sure the boats don't touch. You might want to check the fillings in your teeth, too, to make sure you don't still have some old silver ones in there...and be sure your life insurance benefits still are assigned to the right person... d8-) G Hint of sarcasism noted..... Ken. I sure don't want to spoil anyone's fun, Ken, but I want to know where your pond is, so there's no chance I ever go near it by mistake... The electrical ideas we've seen here really give me the willies. And just think, if you'd just dumped in some rotenone when this thread started, you'd be halfway to restocking by now. There are reasons that fish and game departments all over the country use the stuff for killing off the fish in ponds. It's safe, it's easy, and it works. d8-) Chuckle.... at least nobody suggested jumper cables, long log chain, pole climbing spikes and hi-tension wires.... G Ken. |
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