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

Thread: Recurring Algae Problem

  1. Back To Top    #1

    Join Date
    Feb 2014
    Location
    Ft Lauderdale
    Posts
    2

    Recurring Algae Problem

    Hello all. I have an algae problem that I cannot get rid of. I have been following these forums for a while and the slam protocol. My latest slam was about 2 weeks ago. I discovered algae again yesterday. My FC level never dropped below 5. I reluctantly had my water tested at the pool store today.
    TC - 5
    FC - 5
    Combined chlorine - 0
    pH - 8
    total alkalinity - 100
    CH - 275
    CYA - 80
    salt - 3100

    Phosphates were about 1000.

    I understand from these forums that phosphates shouldn't matter as long as the FC level is maintained. But this last time my FC level was at 5 when the algae occurred. I'm in the process of starting another slam. One issue I have is that we have a tiki hut and the overhang is over the pool so that whenever it rains we get a lot a dirt / dust from the tiki roof. Is it possible that I need to maintain a higher FC level? Or should I just use the phosphate remover? I live in south florida and also have the TF-100 test kit.

    Thanks for all the help
    Dave

    15x30 in ground, 14,000 gal, 2hp pump, autopilot digital nano salt system, Florida Stucco Gem Finish

  2. Back To Top    #2
    Mod Squad YippeeSkippy's Avatar
    Join Date
    Jan 2012
    Location
    'burbs of Augusta, Georgia
    Posts
    6,487

    Re: Recurring Algae Problem

    Absolutely keep your FC a bit higher if you're having repeated problems. Your target level is 6, never to drop below 4. So aim a bit higher than 6 (like 8) and then the normal daily FC loss won't take you below 6.

    Your pH is too high, and you need to get some muriatic acid in there (using PoolMath as a guide).

    Phosphate remover just isn't necessary if you keep your pools chlorine level at the appropriate level. If you have problems doing so....well...it might help but doubtful.
    My Amazon Smile for November12K Fiberglass IG, Infinity 4000 automatic cover, SWCG, Hayward Sand Filter, Hayward 1.5 Pump, Doheny Discovery Robot, Savi Melody LED pool lights, outdoor speakers and other assorted doo-dads. Sundance Altamar Hot Tub.
    Our pool build--> Our Pool Solved Our Sloping Yard Skippy's Cheap Pool Cooler -->Skippy's New Fountain

  3. Back To Top    #3


    TFP Guide

    domct203's Avatar
    Join Date
    Jun 2015
    Location
    CT
    Posts
    3,375

    Re: Recurring Algae Problem

    Quote Originally Posted by attydy View Post
    Hello all. I have an algae problem that I cannot get rid of. I have been following these forums for a while and the slam protocol. My latest slam was about 2 weeks ago. I discovered algae again yesterday. My FC level never dropped below 5. I reluctantly had my water tested at the pool store today.
    TC - 5
    FC - 5
    Combined chlorine - 0
    pH - 8
    total alkalinity - 100
    CH - 275
    CYA - 80
    salt - 3100

    Phosphates were about 1000.

    I understand from these forums that phosphates shouldn't matter as long as the FC level is maintained. But this last time my FC level was at 5 when the algae occurred. I'm in the process of starting another slam. One issue I have is that we have a tiki hut and the overhang is over the pool so that whenever it rains we get a lot a dirt / dust from the tiki roof. Is it possible that I need to maintain a higher FC level? Or should I just use the phosphate remover? I live in south florida and also have the TF-100 test kit.

    Thanks for all the help
    Dave

    15x30 in ground, 14,000 gal, 2hp pump, autopilot digital nano salt system, Florida Stucco Gem Finish
    Welcome!

    Would you please post a full set of results from your TF-100? We don't trust the pool store testing.

    Dom
    Dom - TFP Guide
    Intex 18' X 48" Ultra Frame AGP 6700 gallons | Two Intex CS8110 SWG's | Hayward Pro Series 21" Sandfilter | Hayward 1.5HP Power Flo Matrix pump | Hayward Thru-wall Skimmer | Wanda the Whale | 72 sq ft of Sungrabber Solar Panels with Hayward GLC-2P-A | Taylor K2006 Test Kit, Sample Sizer & Speed Stir | Click Here To Become a TFP Supporter!

  4. Back To Top    #4

    Join Date
    Feb 2014
    Location
    Ft Lauderdale
    Posts
    2

    Re: Recurring Algae Problem

    Quote Originally Posted by domct203 View Post
    Welcome!

    Would you please post a full set of results from your TF-100? We don't trust the pool store testing.

    Dom
    Test results for 6/24/16

    FC 29
    CC 1
    TC 30
    Ph 7.8
    TA 100
    CYA 80

  5. Back To Top    #5

    TFP Guide

    AimeeH's Avatar
    Join Date
    Apr 2012
    Location
    Columbia SC
    Posts
    1,837

    Re: Recurring Algae Problem

    Hi and welcome.

    I can feel your pain on reoccurring algae. It's coming back for a reason. Basically that is not enough chlorine on a daily basis or not passing all three tests when going through SLAM process.

    May I suggest when proceeding to SLAM, consider taking out light fixtures where algae might be hiding behind those in the niches. Looking for any cracks and crevices where algae might be hiding. And brushing those. I've been through this and found algae within the skimmer box plates caked up a good bit. I've found it where my fiberglass steps meet the vinyl.......I could go on and on. Last year I dedicated a kitchen hand held scrub brush to the matter and sent the kids to work on all of the tiny cracks and crevices while they were in the pool. That's when I became such a huge advocate of brush brush brush.
    18*36*23 true "L" vinyl IG 29,000 gallons. SWG. TF-100 test kit.
    http://tftestkits.net/splash-page.html

  6. Back To Top    #6


    TFP Guide

    domct203's Avatar
    Join Date
    Jun 2015
    Location
    CT
    Posts
    3,375

    Re: Recurring Algae Problem

    Quote Originally Posted by attydy View Post
    Test results for 6/24/16

    FC 29
    CC 1
    TC 30
    Ph 7.8
    TA 100
    CYA 80
    Alright, looks like we're SLAMin'. I hope you dosed to get the FC back up to 31.

    Dom
    Dom - TFP Guide
    Intex 18' X 48" Ultra Frame AGP 6700 gallons | Two Intex CS8110 SWG's | Hayward Pro Series 21" Sandfilter | Hayward 1.5HP Power Flo Matrix pump | Hayward Thru-wall Skimmer | Wanda the Whale | 72 sq ft of Sungrabber Solar Panels with Hayward GLC-2P-A | Taylor K2006 Test Kit, Sample Sizer & Speed Stir | Click Here To Become a TFP Supporter!

Posting Permissions

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