Topic split off by Moderator
We had a beautiful pool all this summer after two horrible years of fighting algae and spending hundreds $ on liquid chlorine. About this time last year, we purchased your special testing kit and because CYA was high, drained 1/2 of our pool and started over. Followed your shocking instructions and in a couple days had beautiful water. We installed an automatic chlorinator and used 3" Trichlor tabs and didn't even have to shock all summer. Just added an occasional 1/2 gal of liquid when the grandkids were in for long days. We get a lot of evaporation and even with the solar cover have to add water almost every day in summer. Added "Metal Out" occasionally because our well water has iron.
Last week our pool turned dark green with algae in a matter of a couple days when we were out of town. Tested and found CYA at 100!!! Had no idea until I started looking here that Trichlor raises CYA so bad. So guess we have to drain 1/2 again......drat!
So my question is, is there a non-trichlor or non-dichlor tablet product I can use? We just love the convenience of the tablet feeder but sure don't want to drain the pool every year. Any suggestions?
Stats: 21,000 gal fibreglass pool, sand filter with new synthetic sand (forgot the name), Pentair 2-speed pump.