Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 8 of 8

Thread: HELP, black algae? Leak? Stabilizer?

  1. Back To Top    #1

    Join Date
    May 2016
    Location
    Abilene/Tx
    Posts
    40

    HELP, black algae? Leak? Stabilizer?

    Hey everyone new pool owner. Thanks to TFP I got my pool up and running beginning of June and have had no problems for 2 months. Then I went on vacation!! I came back to weird black/dark green spots around the pool and yellow dusty Algae on the steps etc. So my first plan is to vaccum and brush brush brush. In the mean time I need to figure out my levels. I added to much stabilizer beginning of summer and weirdly my pool did fantastic. Felt like less bugs, kept the chlorine well? Is that possible my water and side were crystal clear. However in July my cya dropped to 50 and so many problems are arising? Any correlation? Should I bring stabilizer up a bit or wait till after I slam the pool? ....now for the leak. One day I noticed my under my skimmer basket looked like it had bugs and debris so I stuck my vaccum hose in it and it was drawing water in some vortex lol and now I have to add water once a week? Could that also be a stabilizer thing too? Where do I begin?
    15ft by 30ft kidney style? Inground plaster pool w/8ft attached spa. Shallow end is 3ft and deep end is 9ft. Pentair clean and clear plus (thinking 420?)shooting for BBB method.

  2. Back To Top    #2
    Texas Splash's Avatar
    Join Date
    Jun 2014
    Location
    South-Central Texas, Marion/San Antonio
    Posts
    12,979

    Re: HELP, black algae? Leak? Stabilizer?

    Well, if you have algae, don't raise the CYA (stabilizer) yet. Start the SLAM right away and remove all the algae via the SLAM page (link below). Don't let-up until you pass all 3 criteria. Stabilizer will have nothing to do with a leak. But adding water once a week is nothing unusual. I actually add a little water almost everyday because of evaporation. It's brutal in our state this time of year. One way to know for sure is to turn everything off before bed. Make note of the water level and see if it's the same when you wake up. If you see a drop, then you can bet concerned.

    Treat the SLAM now with regular bleach (FC of "20") and make sure to follow the SLAM page "precisely" for beast results. Don't forget to adjust pH to about 7.2 before starting the SLAM. After the SLAM is complete, then you can increase the CYA a little more for this summer if needed. Good luck!
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
    If you enjoyed your TFP experience, please consider donating to Support TFP!

  3. Back To Top    #3

    Join Date
    May 2016
    Location
    Abilene/Tx
    Posts
    40

    Re: HELP, black algae? Leak? Stabilizer?

    Thank you pat I think u helped me alot last time. Should I defeat most of the algae first then conquer the black algae?

  4. Back To Top    #4
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    23,999

    Re: HELP, black algae? Leak? Stabilizer?

    You can do both at the same time during the SLAM.
    More about black algae here, Pool School - Black Algae
    TFP Moderator
    If TFP helped you or saved you money - Become a TFP Supporter! <--Click here
    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

  5. Back To Top    #5

    Join Date
    May 2016
    Location
    Abilene/Tx
    Posts
    40

    Re: HELP, black algae? Leak? Stabilizer?

    Last night I added muriatic acid like pool math said to do and it didn't get my pH lowered enough can I plug my new numbers in and use more?...also my cya is now to about 20 should I still SLAM?

  6. Back To Top    #6
    Pool Tool's Avatar
    Join Date
    May 2014
    Location
    Western Chicago Area, IL
    Posts
    754

    Re: HELP, black algae? Leak? Stabilizer?

    Regarding your pH, this is why it helps to start every thread with your current test results. The pH test tops out at 8.2 - if you are over that it would take multiple additions to get it down possibly. Yes, use as much as you need to get to 7.2ish. P.s. I hope that doesn't read harsh, it isn't supposed to be anything but a friendly request.

    If you have algae you must slam. Estimate your slam level on your most recent CYA level and go. If its really 20, you should add enough stabilizer to get to 30 and slam away. You can target slam FC level of 30 ppm CYA once you hang the stabilizer in front of the return.

    Good luck.
    16' x 32' (21100 gal), vinyl, 1.5 hp Hayward SuperPump,
    Tagelus TA60/60D Sand Filter, Raypak 399K Digital Heater, TF-100

  7. Back To Top    #7

    Join Date
    May 2016
    Location
    Abilene/Tx
    Posts
    40

    Re: HELP, black algae? Leak? Stabilizer?

    Sorry it's just a rookie mistake I'm only seeing the site on a cell phone so I haven't read the rules or even where to post. I probably should have posted on an algae topic??

  8. Back To Top    #8
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    23,999

    Re: HELP, black algae? Leak? Stabilizer?

    Open TFP in a browser on your phone and select Full Site. It works great, I use it on phone and Tab.
    TFP Moderator
    If TFP helped you or saved you money - Become a TFP Supporter! <--Click here
    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

Posting Permissions

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