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  1. M

    Water drains back

    I was putting my filters back in after cleaning and tried to fill the filter bowl as much as possible but the water kept draining out. There are no visible leaks. The same thing happens when I clean the skimmer at the pump, the water keeps gurgling and draining out of the skimmer basket. Is this...
  2. M

    Old pool, new wter

    I've just refilled my pool after draining about 7/8ths of the water due to high calcium hardness and some broken tiles. My numbers are FC, TC are.25 or less so CC is 0, PH is 6.8, TA is 140, CH is 220 and CYA is unreadable (somewhere under 25). I've read I should use bleach upon startup. Any...
  3. M

    Pool drained due to high CH

    I am draining my pool right now because of high CH (800+) and high CYA. I am going to replace some tiles also while empty. I will probably start refilling in two days and hoping to get some advice on what I may need to add as it refills?
  4. M

    Help with numbers

    We have a chlorine machine that makes chlorine from salt. We have had this for about 5 years with no problem and have just had it serviced. The chlorine it makes is unstabilized so I add stabilizer. That said, heres my problem. I've got a stain on the plaster that is a dark yellow. It has not...