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Our 66,000 gal in-ground outdoor pool operates for 3 1/2 months (roughly May 22 thru Sept 7). During that period we use Tri-Chloro and Soda Ash to achieve proper FC and pH, but CYA can reach 100 when we have another month before closing, requiring us to drain 50% of the water and refill. Quick...

Our secure fenced 66,000 gal inground gunite privite membership pool is used for a maximum of 3 1/2 months in the summer in NW Minnesota. Attempting to operate if outside of that range is too expensive and it would be rarely used outside of those months. After our season ends we pump out...

Minnesota pool inspectors rules limit CYA to 100 ppm. Above that you have to partially drain pool and add water to reduce CYA. We currently use Trichloro 3" pucks in a feeder to conveniently set chlorine level, but near the end of the season we are close to 100 ppm CYA. My question..how...

I am installing a Pentair TR140C which specifies 275# of 1/4 to 1/8" dia pea gravel. What I find is that, when wet, this amount just matches the height of the top of the laterals. Is this the right level, or should be laterals be covered to perhaps an inch or should they be exposed? The sand...

Our group pool is 40+ years old, 66,000 gal, runs June/July/August. Currently have relatively new Hayward North Star 2 HP pump (SP4015X20), Sta-Rite 400,000 BTU heater (SR400HD), but our old (40+ years) pair of Sta-Rite 84548 48 sq ft each DE filters are shot. By shot I mean they are patched...

For years our practice has been fairly simple. We lower the water to about 1/2, blow out the pipes and use some RV antifreeze. It has been perfectly successful to prevent any damage, however in the spring the pool is very stained with algae and worse actually is the staining from leaves. Our...