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    Air bubbles in filter

    Hello again, thanks to you wonderful TFP folk the water chemistry problems I had have been resolved and all as stayed fine... but unfortunately a problem of a rather different nature has now developed. I've read all the threads I can find on air in filter problems but nothing on the crazy...
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    Low CYA breakpoint?

    Hi folks, I joined this great site several years ago and have often followed the various topics and always tried to follow your TFP methods. As a consequence I don't normally have any problems, it's a very rare occasion when I've had to slam the pool. I've always slammed to breakpoint as soon as...
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    Deep end TA fine but shallow end TA very high

    Hi, I'm getting TA = 148 at the deep end & TA = 90 at the shallow end. The pool is an outside, in ground, typical liner pool with inward sloping sides to a 7' 'hopper' shaped deep end L=30' W=15' (about 15,000 imp. gallons) The rest of the equipment consists of multi-port valve sand filter, gas...