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currently using a taylor k1000 for FC and PH. TA, CH and CYA are tested at the local pool shop. need new kit for testing FC beyond 5.

14 y/o ~30k gal 20x40 outdoor in ground concrete pool. FC = 5 CYA = 20 TA = 100 CH = 250 B = 0 pH is constantly creeping upward - even when there is zero pool activities. thinking this has to do with the climate in southeast florida here causing pH to naturally rise. what gives...

standard 20x40 in ground concrete pool has a foot long 1/32 hairline crack in one of the corners starting from the water line down. losing about an 1" per day. this is more than evaporation alone so it could be leaking. * what product/method is used to repair this? lowering the water level a...

can someone link (no luck googling) or explain the relation between free chlorine and cyanuric acid. FC is the sanitizer. for sake of easy comparison. let give FC has a sanitizing power of 100. control group. with CYA at zero. FC will obviously have its full sanitizing power of 100...

there are some 1-speed vs 2-speed thread with excellent info, however this thread is for the expert to check my math. INFO SPECIFIC * pool is 30,000 gallon. filtration target is a 1 turnover per day. vacumm target is 2 hour per day. * pump is a hayward super pump. with a 2HP motor and with a...

looking to setup the plumbing for a back flushing a cartridge filter. have anyone done so? what were your results. upon inspection of the cartridge. during normal flow. the cartridge does have a hard plastic backing on the inside of the cartridge. that is probably what keeping the...