Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 3 of 3

Thread: I can't vacuum to clear?!

  1. Back To Top    #1

    I can't vacuum to clear?!

    Every morning I vacuum dead algae from my pool. The water is clear. As I vacuum half the pool the turbulence from the return valve stirs up the water before I can vacuum the whole pool. The pool (above ground 9000 gallons) becomes gray murky. I have been doing this for 2 weeks and the water never seems to fully clear up. However after sitting overnight the water becomes clear again and the dead algae settles on the bottom. Then I vacuum again and the cycle repeats itself. When will this pool ever get clear? All my chemical level are fine, ph is 7.4, chlorine is 3. What gives? I don't think that I am generating an new algae because I super shocked it for a few days until the green turn foggy gray.

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: I can't vacuum to clear?!

    Welcome to TFP!

    Are you able to vacuum to waste? If you have a rotary multi-port valve, it should have a setting to vacuum to waste. That will lower the water level, but it will allow you to vacuum without stirring up everything on the bottom If you don't have vacuum to waste you should be able to get the pool clear in not too many more days by just being persistent.

    Are you sure that the murky water is just from stuff on the bottom getting stirred up? It is possible that the filter is malfunctioning and dirt is coming back into the pool through the return. If that is happening you won't be able to get the pool completely clean until you fix the filter.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  3. Back To Top    #3

    Re: I can't vacuum to clear?!

    I think I just have a one way valve so I can probably rotate it half way to lower the water rate. I'll try that tomorrow after it settles overnight. I have a new cartridge filter so I assume that it is filtering properly. It's green when I spray clean it every other day. How can I tell the filter is working properly, the water pressure is very strong.

Posting Permissions

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