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I have been developing these mystery stains all over the bottom of my pool. They do not brush off, they do not feel raised or rough. The only thing I can think of is that the ph was allowed to get high (for me anyway) and remained above 8.0 for a while (not sure how many days). The chemicals...

I purchased a "Poolskim" secondary skimmer. When I opened it I learned it needs to attach to a threaded return line. My returns are 1.5" smooth pvc and use a slip style eyeball to direct the water. Is there a way to convert a smooth pipe to a threaded one? It seems there should be a...

My Pool: 12K in ground Diamond Brite Single drain in deep end, one skimmer, three returns Solar heating system on roof of house / manual valves to open & Close. My existing equipment: Hayward SP2805X7 Pump Hayward Max-Flo motor model #C48J2N131B3 Hayward C-800 Filter Solar heater on roof of...

How long does it take for an addition of Calcium Chloride to fully dissolve and give an accurate reading on your new level? We have been getting huge rainstorms here is south Fla and I have been draining the pool a lot. My test this morning showed my CH at 220. I have done my calculations...

I have been maintaining my own pool using the information on this site since the beginning of June. It has never looked better and I am getting the hang of it. My CH has been holding steady at 300 since i started. But over the last 3 weeks, it has slowly started dropping off. It measured...

Are the pool calculator ranges set in stone or can they vary between pools? I am writing about a different pool than in my signature, so here are the numbers: Free form, in ground, diamond brite finished pool (7842 gallons), with a SWCG. The current numbers are: FC:17 (and dropping after...

I have had this pool at a rental house with the comfort that my local pool service has been keeping up with their end of our $75 per month contract. Boy was I surprised when my tenants moved out and I found that my SWCG had burnt up (but that's another story) and the service tech had been...

Hi, My name is Kevin and I have been pool stored. Before finding this site, just recently, I was told my CYA was too low (@ 30). The kid at the pool store told me to put in an entire 4lb bag of Suncoast Stabilizer into the skimmer. I did and now the CYA maxes out on the test kit at 100+. I...