Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 6 of 6

Thread: Algae problem

  1. Back To Top    #1

    Join Date
    May 2016
    Location
    Dallas, TX
    Posts
    3

    Algae problem

    Yesterday we had algae show up. We have a 14,800 gal pool with Pebbletec and a basic test kit. I just ordered the recommended test kit last night. All we have right now is a basic test kit. I checked the chlorine level yesterday and it was essentially zero. The test water had a slight yellow tinge to it. The alkalinity was 80 ppm and the pH was 7.6.

    I back washed the DE filter yesterday and added 1 lb of granular "shock" to the pool at the recommendation of the local pool place until I could bring a sample in, brushed the pool, added more chlorine tablets to the in line chlorinator, and left the pump running continuously. I also added 5 caps of phosfree. Then I started researching and came across TFP.

    I took a water sample in this morning to the pool place and these are the results:
    FC .13 ppm
    TC 1.95ppm
    CC 1.82 ppm
    pH 7.5
    hardness 211 ppm
    alkalinity 59 ppm
    CYA 65 ppm
    copper 0 ppm
    iron 0 ppm

    i added 4 lbs of baking soda (I use that instead of alkalinity up) when I got back from the pool store at their recommendation. I am trying to figure out how much 6% bleach to add. I looked it up in how to slam the pool and saw I need to take it up to 25 ppm. I don't have a test kit that can test that high and I am nervous about taking it up that high. Right now the pool water is clear and there is a small amount of brownish algae on the flat parts of the pool. The pool looks a lot better today than yesterday but I know the algae isn't killed.

    I would love love any help you all can provide.

  2. Back To Top    #2
    Mod Squad woodyp's Avatar
    Join Date
    Apr 2010
    Location
    East Texas
    Posts
    9,655

    Re: Algae problem

    Welcome to the forum. STOP adding anything containing CYA-------pucks, dichlor and such.

    I'd add enough bleach to take your FC to 12 or 14-------ASSUME you'll lose 3 ppm FC each day and add that much bleach back to it daily (about a gallon) until your kit arrives.
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
    2 Speed Hayward Power-Flo Matrix 85 g.p.m. 22" 250lb. sand filter hard plumbed
    Pool Rover Jr., Pool Blaster Max, Diver Dave TF100 Test Kit/Speed Stir
    Margaritaville Frozen Concoction Maker, Liqour Chiller, & Drink Mixer & Party Tub----Collect 'um all!

  3. Back To Top    #3

    Join Date
    May 2016
    Location
    Dallas, TX
    Posts
    3

    Re: Algae problem

    Thanks for the response. I used the pool calculator and added 363 gal of 6% bleach. I will stop using the pucks and anything else other than bleach. We have a lot of trees and our pool doesn't get a lot of direct sun light. It is only full sun for about 45 minutes. Even with limited sun is it still a good assumption we loose 3 ppm of FC per day? Also, long term if you just use bleach and no pucks, how do you manage chlorine levels if you go out of town for 5-7 days?
    14.8k gallon
    Pentair FNS PL 60 DE filter
    IG Pebbletec
    Hayward 1.85 THP / PB4 Booster Pump

  4. Back To Top    #4
    Mod Squad woodyp's Avatar
    Join Date
    Apr 2010
    Location
    East Texas
    Posts
    9,655

    Re: Algae problem

    Raise the Fc close to SLAM level and use a puck floater until you get back. Be nice to have a friend take a peek at once or twice to clear skimmers and such too. Close to 3 is a good approximation for Dallas. You still won't be anywhere near full SLAM level.
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
    2 Speed Hayward Power-Flo Matrix 85 g.p.m. 22" 250lb. sand filter hard plumbed
    Pool Rover Jr., Pool Blaster Max, Diver Dave TF100 Test Kit/Speed Stir
    Margaritaville Frozen Concoction Maker, Liqour Chiller, & Drink Mixer & Party Tub----Collect 'um all!

  5. Back To Top    #5

    Join Date
    May 2016
    Location
    Dallas, TX
    Posts
    3

    Re: Algae problem

    Great. Thanks again for the help.
    14.8k gallon
    Pentair FNS PL 60 DE filter
    IG Pebbletec
    Hayward 1.85 THP / PB4 Booster Pump

  6. Back To Top    #6

    TFP Guide

    pabeader's Avatar
    Join Date
    May 2015
    Location
    Cartersville Ga
    Posts
    4,112

    Re: Algae problem

    Just be careful with the floaters. You are right at the CYA level you want to be (maybe a little over, assuming the $tore test was even close) and each puck is going to only add to the issue.
    Bob - INTEX 12x24 owner, 'New to me' Kreepy Krauly Sand Shark, Test kit: TF-100 w/Speed Stir

Posting Permissions

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