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  1. M

    Mustard Algae with high CYA...Need Advice

    Hello, I need some advice. Draining and re-filling is not an option. My mother-in-law has an issue with her pool and yellow algae growing on gunite walls. With a CYA of 70 and mustard algae present, should I SLAM the pool first(Recommended shock level is about 39!) or should I lower the CYA...
  2. M

    Tips and Tricks

    Re: A couple of tips I thought everybody knew. Anybody got some When emptying the basket at your pool pump feel around inside the impeller for debris that may have made it through the basket and got stuck at the pump, with the pump off of course. This will ensure better water pressure/flow...
  3. M

    DE Filter Pressure Down From 11 to 6 psi

    Problem Solved!!! I shut down the pump, opened the air relief on the filter, took the pump basket out and felt inside the impeller for debris. It was loaded with pine needles! I cleaned them all out thoroughly and put everything back together. Primed the pump and the pressure is back up to 11...
  4. M

    DE Filter Pressure Down From 11 to 6 psi

    Thank you both. Pressure gauge is doubtful, it does go to zero easily when I shut down the pump. Can't be a major leak because my water level in the pool is exactly the same for the past few days with pump running 10 plus hours daily. Not sure how there could be a blockage with the excellent...
  5. M

    DE Filter Pressure Down From 11 to 6 psi

    Hello all, I am hoping someone can help me figure out why my DE filter pressure has fallen from 11 psi to 6 psi this week. I have not backwashed yet since opening and I would have expected a higher pressure. I have a 20K gallon gunite pool with Hayward pump and one return line leaving the...