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

Thread: Algae every few days

  1. Back To Top    #1

    Join Date
    Jun 2011
    Montgomery, AL

    Algae every few days

    Okay, I have had an issue with algae for about a month now. I balanced my pool and added 8 pounds of CYA last week (it was showing 0). Now this week my CYA still registers 0, FC is 0 and TC is 0 and my other levels are fine (PH 7.2, ALK 80). My water is crystal clear but, I have brownish sandy gunk in the bottom and along the walls.

    I am assuming this is the algae still living because after I brush it comes back maybe three or four days later in almost the same spots on the wall. I read another post thinking it may be dirt, but it returns in the same places. I already used Leslie's Algae Control to treat about 3 or 4 weeks ago and I put about 12 oz of Leslie's Algae Control every Sunday for prevention, but something is not right. Though the pool looks well, this chemical level and algae/dirt business is really irksome. Any help is appreciated.
    33,000 (20x40 3-8 ft), Hayward Sand Filter, vinyl, 1HP pump, Dolphin Deluxe 3

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

    Re: Algae every few days

    You need to properly clean and shock the pool, and also add some more CYA. I wouldn't bother with the algaecide, that isn't helping much.

    Start by vacuuming up all of the gunk you can and shocking to an FC level of 10 in the evening, at the same time start adding another 8 lbs of CYA. Then continue to follow the shocking instructions from Pool School.
    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
    WestSidePool's Avatar
    Join Date
    Jun 2009
    Cincinnati, OH

    Re: Algae every few days

    Where are you getting your testing numbers from?
    If it's a pool store they may not be totally accurate.

    As most people here will recommend, you're better off to get your own test kit.

    If CYA is truly at zero, you should be pretty close to 30 for adding 8lbs of stabilizer.
    Also if your pool is in the sun most of the day, you will probably need more than 30 for stabilizer (CYA) since the sun will eat your chlorine super fast.

    You shouldn't need to use the algae control. Bleach and or Chlorine (same thing) and some elbow grease is all you really need.

    In the pool school section read how to fight algae. But again it's best to have your own test kit, so you know exactly where your numbers are at, and you are able to test them daily.

    IG 17x33 Grecian - Vinyl Liner (21k gallons), Hayward Pro-Grid DE 4820 filter, Hayward Super Pump, CompuPool SWG CPSC36, TF-100 Test Kit

Posting Permissions

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