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  1. C

    Black algae fading but not gone

    Post split from Black algae question Zea3 I have kept my FC > 20 and the pump running 24/7 for 3 weeks now. Most of the Black Algae is now light gray, but none of the spots have vanished completely. Should I try a copper based algaecide?
  2. C

    White deposits on pools walls

    I have an aggregate surface that was installed last May. I have developed black algae spots on the walls and floor and I am currently treating with an algaecide (also brushing and keeping chlorine level high). I have noticed these white spots forming on the pool walls that can easily by scraped...
  3. C

    Jacks Magic test Kit worked then did not on another try

    I have black dime size stains on the walls and floor of a new aggregate surface I installed last march. Used a Jack's Magic Test kit I bought from Pinch-A-Penny and it tested positive for copper. That was several months ago and I purchased the appropriate chemicals to treat it. I have since...
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