Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 2 of 2

Thread: Preventing Algae

  1. Back To Top    #1

    Preventing Algae


    I have a loop loc pool cover and everytime I open the pool in the spring it's full of algae. I asked someone in a local pool store if there is any way to prevent this. He said I can do one of two things. 1) buy a cover that doesnt let sunlight through or 2) keep your current cover and buy a black cover to put underneath to prevent sunlight from coming in - he said this will greatly reduce the algae but not completely eliminate. I'm not buying a new cover b/c of the expense. Is there any truth to number 2?

    Also, I've started noticing some yellow algae form in my pool. It's been humid and we've had a few stroms recently. I shocked the pool but it came back 4-5 days later. Should I use an algaecide?

    Thank you so much,
    1) Pool is 16x34 and is 22,400 gallons.
    2) DE Filter
    3) IG pool
    4) Vinyl liner
    5) Hayward filter and super pump
    6) Pool built in 2006 (I'm second owner)

  2. Back To Top    #2

    Join Date
    Mar 2007
    San Rafael, CA USA

    Re: Preventing Algae

    An opaque cover will block the UV in sunlight from breaking down chlorine so yes, that will help significantly. In addition, you should close as late as possible in the spring so that the water is cold (below 50F preferably) and open early in the spring before the water warms up (below 50F preferably). You can use chlorine and Polyquat 60 as described in this post where they should last a long time at the colder water temps and with no sunlight.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts