1-pound of gas chlorine=1part per million(ppm) in a 120,000 gallon pool. *Average cost $ .28 lb 1-gallon sodium hypochlorite(bleach)= 1part per million(ppm) in a 120,000 gallon pool. *Average cost $ .75 per gallon. 1 1/2 pounds calcium hypochlorite(tablets)= 1part per million(ppm) in a 120,000 gallon pool. *Average cost $1.60 per lb. The City of X used sodium hypochlorite(bleach)to disinfect their 3 swimming pools last year. The total number of gallons used for the year was 10,000. The cost of the bleach was $0.75 per gallon, so the cost to disinfect City X's pools last year was 10,000 gallons X $0.75 which = $7,500.00 This year City X is thinking of changing to calcium hypochlorite(tablets) for disinfection. To do this it will take 1 1/2 lbs of calcium hypochlorite(tablets) per gallon of bleach it took last year. That is 1 1/2lbs x 10,000gals which = 15,000 lbs The price of the calcium hypochlorite(tablets) was $80.00 per 50 lbs bucket, which equals $1.60 per lb. So $1.60 x 15,000 lbs = $24,000.00 That means the cost increase to change from bleach to tablets would be $24,000.00 minus the $7,500.00 it took last year which = $16,500.00 That is $16,500.00 plus the cost of the new feeders! The sales guy said it had something to do with chemistry? Seems reasonable right??? "Kick the Bucket!" HEY BLEACH WORKS! Is Your Water Right? Be Sure with SureWater Feeders! *(Check your budget, average costs may vary) Professional Pool Operators of America NO MORE METERING PUMPS NO MORE PROBLEMS !!!