On 07/26/2011 11:40 AM, Jim T wrote:
Last year I got hit with algae early so I got "phosfree" and it cleared
it up.

Went to a maintance dose of "pool perfect phosfree" earlier this year
and the algae came this year about two months ago.

Part of my problem (i think) is I'm getting my phoshates checked at the
pool supply and they have changed help numerous times. I need a good
regent test for phosphates and I've been told that here before. The guy
told me 300ppb yesterday (but I really doubt that number) Usually in the
low 100s.

My chlorine level is monitored closely. Yesterday it was 3ppm I just
tested PH and it was 7.4 in a quick test with a calibrated probe that's
pretty accurate. The store said I needed alkaline but only 3.5lbs which
sounds about right for this time of year.

My knee jerk reaction is to buy more "Phosfree" but I don't know for
sure. *I do know* I'll be getting a phosphate regent test.

How do metals play in algae growth?

Anyone else use "Phosfree" then "Pool Perfect Phosfree" with better
results?

Comments? Suggestions?

Green yellow algae with spots on plaster that have to be periodically
scrubbed off.

******************
Sand Filter
******************

Central TX (Hotter than it's ever been ~ 105 today) Damn I want to go
back to NM!
At least 50% shade on pool. (nice!)
10,000 gal pool and spa.

If your suggestion is to get a phosphate regent test don't waste your
time. I already know that. Thanks

Jim

*****************
Switching to an earth filter will pay for itself in the long run. Sand
filters are the worst filters for a pool. They get clogged with gunk
very quickly and back flushing them just doesn't remove the gunk.

I had a pool when I was raising my kids and switching from a sand to an
earth filter was the best investment I could have made for that pool. I
only had to run the filter 4 hours a day instead of 8 and just shock the
pool once a week or so, no other chlorine products needed. The savings
in electricity, wear and tear, chemicals and filtering agent (not to
mention no more problems) easily paid for for the cost of a new filter.

John