On Tuesday, June 24, 2014 5:22:25 PM UTC-4, DannyD. wrote:
DannyD. wrote, on Tue, 24 Jun 2014 20:32:18 +0000:



a) liquid chlorine:

$cost/gallon x 1gallon/9.7pounds x 1/10.8% by wt available chlorine



b) liquid bleach:

$cost/gallon x 1gallon/9.0pounds x 1/5.7% by wt available chlorine



c) solids:

$cost/pound x 1/??% by wt available chlorine, as listed on the container



I have used all three types of chlorine:

https://c1.staticflickr.com/3/2908/1...5922732f_b.jpg



Assuming the HASA liquid chlorine averaged $3.59/gallon after all the

value-pack coupon and buy-11-get-one-free complicating shenanigans:



The equation for liquid chlorine is:

$cost/gallon x 1gallon/9.7pounds x 1/10.8% by wt available chlorine



So that's:

$3.59/gallon x 1gallon/9.7pounds x 100/10.8 = $3.43/pound of available Cl



By way of liquid chlorine local (Silicon Valley) comparison:

Home Depot = $6.86/2 gallons * 1gal/9.7 pounds * 100pounds/10.8 pounds = $3.27/pound of available Cl

Lowes = $6.90/2 gallons * 1gal/9.7 pounds * 100pounds/10.8 pounds = $3.29/pound of available Cl

Leslie = $10.49/2 gallons * 1gal/9.7 pounds * 100pounds/10.8 pounds = $5.01/pound of available Cl



Comparing the Dichlor, we get:

Leslies = $122/40 pounds * 100/55 pounds = $5.55/pound of available Cl

Lowes = $70/22.5 pounds * 100/56 pounds = $5.56/pound of available Cl

Home Depot = $80/22.5 pounds * 100/56 pounds = $6.35/pound of available Cl

Costco = $55/24 pounds * 100/36 = $6.37/pound of available Cl



For Trichlor, we get:

Home Depot = $75/37.5 pounds * 100/90 pounds = $2.22/pound of available Cl

Costco = 84.79/40 pounds * 100/84.65 pounds = $2.50/pound of available Cl

Lowes $75/35 pounds * 100/85 pounds = $2.52/pound of available Cl[/b]

Leslies = $80/35 pounds * 100/90 pounds = $2.54/pound of available Cl



For Calcium hypochlorite, we get:

Leslies = $107.19/25 pounds * 100/73 pounds = $5.87/pound of available Cl



So, the best price for available chlorine (excluding the fact it raises the

CYA), seems to be the Home Depot Trichlor, or (if you don't want to raise

CYA), the Home Depot liquid chlorine (assuming it's fresh).

$2.22 vs $3.27 So liquid chlorine is 47% more expensive than trichlor. The calculations I presented liquid chlorine was 40% more. 40%, 47% it makes not
a nipple's worth of difference.