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OK, now then: What level CC do you have? How much FC do you loose in an overnight test? All great questions but I am a pool muppet and use a very rudimentary testing kit. I am back on the road again, but when I get back on thursday I will get a proper kit and start watching the numbers. Sorry...

Just got back from a 3 day business trip. Pool is crystal clear! YAY! Here is how I turned it round. Shocked with chlorine granules and held it at about 20+ FC for 5 days. Backwashed every 4 hours for the first 3 days, then once a day. Raised PH to 7.8 on day 4. Vacuumed to waste first and...

I will get at it tomorrow. Forecast is for sun tomorrow, thank goodness. Keep you informed of how it goes. Right now it couldn't be any worse (in terms of pool state). Thanks for the advice, Andrew

30,000 gallon chlorine in ground, vinyl liner, Haywood sand filter, Vari-flow X valve, rated at 75GPM. And it's still raining, and looks terrible :(

My first post. Live in Middle TN, just had the worst rain and flooding I have ever seen. Pool was already sparkling before rain. Unfortunately the monsoon downpour resulted in water sweeping over my lawn, over a wall, through the fence and into the pool, depositing silt and top soil and...

The back up valve is a clockwork mechanism with a turbine driven by the water flowing through it. If it is backing up excessively or the polaris is 'wheelie..ing' or hovering above the bottom chances are there is a crack in it or an 'o' ring has failed. Water temperature has no effect on...