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

Thread: Spring pre-opening woes - algae threat?

  1. Back To Top    #1
    Water_man's Avatar
    Join Date
    Jun 2008
    Location
    Brookline, MA
    Posts
    390

    Spring pre-opening woes - algae threat?

    Here in New England we keep fighting the elements and nature and it’s an ongoing battle. This is why there are so few swimming pool owners.
    Spring blossom is great, as long as the flowers are on the trees. Once the petals are all over the place they are a nuisance. I’m planning to open the pool in about two weeks from now but too much tree debris finds its way inside the pool through the gap between the winter cover and the pool edge.
    My question: Can this cause an algae bloom? Should I open now instead of waiting two weeks?
    This is my ticket for Heaven (when all's working..) :
    22k Gal gunite IGP, 38 SF Anthony DE filter, 1 HP Hayward Super Pump
    380k BTU Raypak Natural Gas Heater (Model RP405A) and solar cover
    8 gal Liquidator w/ 12% bleach, Dolphin Diagnostic Advantage robotic cleaner. 3800 ppm salt, 50 ppm borates.

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,887

    Re: Spring pre-opening woes - algae threat?

    That depends on a number of factors. The most important one is the water temperature. If the water is below 60 degrees the chances of algae are small and any algae that does grow will be easy to kill. If the water is above 60 degrees the chances of algae are much higher. It also matters just how much debris is getting in through that gap. Lots of debris means more chance of algae.
    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

    Join Date
    Jan 2009
    Location
    Cupertino, CA
    Posts
    1,966

    Re: Spring pre-opening woes - algae threat?

    Quote Originally Posted by Water_man
    Spring blossom is great, as long as the flowers are on the trees. Once the petals are all over the place they are a nuisance.
    Hey, at least you don't have a ginormous weeping willow next door, like I had growing up on the South Shore. Little fluttery leafy things drifting down onto the pool all season long.
    --paulr
    BBB "Intermediate Swimmer"
    IG plaster pool 18.5K gal, Hayward Pro-Grid DE filter, 3/4 HP Hydramax II; Polaris 380, 3/4 HP booster
    AG spa 325 gal, probably Sundance of some kind
    Water testing instructions on one page

  4. Back To Top    #4
    Water_man's Avatar
    Join Date
    Jun 2008
    Location
    Brookline, MA
    Posts
    390

    Is this a blue or green pool? Pics included

    Water temp is 60 deg. As mentioned, I intend to open in two weeks.
    FC=CC = 0.
    pH = 7.3.
    I assume CYA is now 40 due to season closing dilution.
    Circulation was achieved by running the robotic cleaner all the time for the last couple of weeks.

    This is how the water looks now. Is it considered blue or green?



    This is my ticket for Heaven (when all's working..) :
    22k Gal gunite IGP, 38 SF Anthony DE filter, 1 HP Hayward Super Pump
    380k BTU Raypak Natural Gas Heater (Model RP405A) and solar cover
    8 gal Liquidator w/ 12% bleach, Dolphin Diagnostic Advantage robotic cleaner. 3800 ppm salt, 50 ppm borates.

  5. Back To Top    #5

    Join Date
    Jun 2007
    Location
    NC
    Posts
    255

    Re: Is this a blue or green pool? Pics included

    Quote Originally Posted by Water_man
    Water temp is 60 deg...I intend to open in two weeks.
    FC=CC = 0.
    pH = 7.3.
    I assume CYA is now 40 due to season closing dilution.
    Circulation was achieved by running the robotic cleaner all the time for the last couple of weeks.
    This is how the water looks now. Is it considered blue or green?
    How much matter is suspended in your water? The deep end (middle picture?) looks considerably 'greener' than the shallow end (pic's 1 & 3?).

    Can you get complete water readings? I would not assume a CYA level yet.

    How long does it take your pool and filter to clean up after a mild/moderate algae bloom? That's what I'd be asking if I was planning on opening in two weeks, one of which is almost gone.
    Triad Region of NC
    18x37 Vinyl IG (24,000 gal.), BBB & GoldLine AquaLogic PS4 SWG, Hayward 1 HP Superpump / Hayward Sand Filter / Polaris 280 cleaner / 6 deck jets / Sheer Descent Waterfall (in coping) / Brick Red Concrete Coping / Stamped Concrete Deck
    Lots of oak trees, maple trees, *and* leaves!

  6. Back To Top    #6
    frustratedpoolmom's Avatar
    Join Date
    May 2007
    Location
    SWSuburban Chicago, IL
    Posts
    11,963

    Re: Spring pre-opening woes - algae threat?

    Fuzzy is right, you can't assume a CYA level, it can go to zero with the right bacteria present and 0 FC. It can turn into ammonia, causing a very high FC demand upon start up.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

  7. Back To Top    #7
    Water_man's Avatar
    Join Date
    Jun 2008
    Location
    Brookline, MA
    Posts
    390

    Re: Is this a blue or green pool? Pics included

    How much matter is suspended in your water? The deep end (middle picture?) looks considerably 'greener' than the shallow end (pic's 1 & 3?).

    All pics were taken at the deep end. It's just a matter of shooting angle. I don't know how much is suspended but the water is definitely not clear. Some previous years openings were algae-less but water wasn't clear either. It took about 2 days to clear. You can see floating tree and flower debris from this season.

    Can you get complete water readings? I would not assume a CYA level yet.

    I don't know how sigificant it would be because I can't guarantee thorough mixing. Since last year I opened with CYA 50 (first year in the "program") I assume this year it would be 40 or a bit less.

    How long does it take your pool and filter to clean up after a mild/moderate algae bloom? That's what I'd be asking if I was planning on opening in two weeks, one of which is almost gone.

    Last year I opened a real green pool because I hadn't taken the precautions I took this year. It took almost a week of hard work. Other than that I don't have an experience with mild/moderate algae bloom.
    This is my ticket for Heaven (when all's working..) :
    22k Gal gunite IGP, 38 SF Anthony DE filter, 1 HP Hayward Super Pump
    380k BTU Raypak Natural Gas Heater (Model RP405A) and solar cover
    8 gal Liquidator w/ 12% bleach, Dolphin Diagnostic Advantage robotic cleaner. 3800 ppm salt, 50 ppm borates.

  8. Back To Top    #8

    Join Date
    Aug 2008
    Location
    Southwest New Hampshire
    Posts
    52

    Re: Spring pre-opening woes - algae threat?

    If it were me I'd open ASAP. I don't see the water temp going down any at this point. If you have the time to do it now, the only downside I see is the cost of running the pump an extra couple weeks. Upside to opening now... You have enough time to get it balanced, kick on the heater for a bit and be swimming on Memorial Day.
    Andrew
    25,000 gal IG Vinyl - PoolPilot SC48 SWG - Sta-Rite 1HP/System3 CF - AquaCal HeatPump - TF-100

Posting Permissions

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