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Thread: Algae starting with cover still on

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    flyboy320's Avatar
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    Algae starting with cover still on

    I'm writing from Toronto, and we have had very unseasonally warm weather this last week (up in the 60-70's). I took off one of the corners of our cover to drain some water from the pool and noticed some green algae starting to form on one of the steps (it brushed off very easily).

    The problem is I'm sure the temps will get back to normal and still below freezing at night, but I'm wondering if there is anything I can do to help prevent a real big algae problem from starting? I'm worried about adding chlorine without my pump and equipment hooked up to circulate the water (everything still stored in the basement). could I just add some chlorine and use a 2x4 to help mix it in, or just ignore it till I open next month?
    10K gal IG, vinyl, 1 HP Jandy Stealth pump, Jandy CS cartridge filter, Delta UV system, Hasa Liquidator

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    Re: Algae starting with cover still on

    I would just wait until next month. Using chemicals now won't necessarily mean you'll have to use less when you open your pool.

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    Re: Algae starting with cover still on

    flyboy320 - I'm in Burlington too (same neighbourhood as you, remember). I'm a bit obsessive with checking the weather. So far weathernetwork.com, weather.com and accuweather.com all show highs in the teens and lows above zero right through till the end of March. I usually open first week of April or so. I went ahead and opened yesterday. Taking a chance (I know weather prediction is not a science) but my pump comes on automatically at 35f to prevent freezing, so I should be OK. If we suddenly get a forecast of -10, I can quickly blow and cap the lines using compressed air (there is a link somewhere about winterizing using this method), rather than draining the pool below the returns again, and just pull the drain plugs on the heater, pump and filter, solar panels...or I can run the gas heater for the short (hopefully) period of below freezing.

    Interestingly, I had green algae on my steps as well, and what I think is pink algae in my return threads. I wonder if the much milder than normal winter and recent warm spell are contributing factors.
    16x28 Roman, 55000 litres, salt water, Zodiac Duoclear 130 (mineral cartridge removed!!!), inground, vinyl liner
    Hayward Tri-star VS900 (1.85 HP) pump, Hayward C3030 cartridge filter
    Nine Techno Solis 4x10 solar panels, Jandy LX 250 natural gas heater
    Jandy Aqualink PDA with Sub Panel Power Centre

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    Re: Algae starting with cover still on

    Well, here's a dumb ole' Southern boy having an almost uneducated opinion on freezing so take it for what it's worth.

    I would suggest opening now also.

    Because I never close, I have "spells" in the winter when the air temp drops well below freezing....down into the teens (F) rarely but sometimes. So far, allowing the pump to run overnight has resulted in no accumulation of ice within the system and seldom anything but a thin skim on the pool surface.

    Besides, just think of looking at that beautiful pool a month early!!
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    flyboy320's Avatar
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    Re: Algae starting with cover still on

    Quote Originally Posted by rcy
    flyboy320 - I'm in Burlington too (same neighbourhood as you, remember)
    Ah ya, just a few blocks away

    I think I'll go ahead and open next week when I have a few days off, nothing better than looking at a pool full of clean water instead of a dirty old cover!!
    10K gal IG, vinyl, 1 HP Jandy Stealth pump, Jandy CS cartridge filter, Delta UV system, Hasa Liquidator

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    Re: Algae starting with cover still on

    I agree..that's why I take my cover off as soon as I can in the spring (which for the past four years has been very early April (I like to shoot for April 1)). I'd much rather look at ice on open water than ice on the safety cover...lol. I have had a couple of times where it's snowed in April. Weird seeing snow fall into the open pool.

    By the way, I can just imagine what your neighbours would think, seeing you out stirring the pool with a 2x4.
    16x28 Roman, 55000 litres, salt water, Zodiac Duoclear 130 (mineral cartridge removed!!!), inground, vinyl liner
    Hayward Tri-star VS900 (1.85 HP) pump, Hayward C3030 cartridge filter
    Nine Techno Solis 4x10 solar panels, Jandy LX 250 natural gas heater
    Jandy Aqualink PDA with Sub Panel Power Centre

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    flyboy320's Avatar
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    Re: Algae starting with cover still on

    My neighbours already think I'm crazy cause like you I normally open in the beginning of April, and they always ask why I open my pool so early.....they don't get it...
    10K gal IG, vinyl, 1 HP Jandy Stealth pump, Jandy CS cartridge filter, Delta UV system, Hasa Liquidator

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    Re: Algae starting with cover still on

    hey guys
    from hamilton ontario opened yesterday as well
    13x20 onground pool

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    Re: Algae starting with cover still on

    Welcome. Lots of good info here - should keep you up late at night browsing..lol.
    16x28 Roman, 55000 litres, salt water, Zodiac Duoclear 130 (mineral cartridge removed!!!), inground, vinyl liner
    Hayward Tri-star VS900 (1.85 HP) pump, Hayward C3030 cartridge filter
    Nine Techno Solis 4x10 solar panels, Jandy LX 250 natural gas heater
    Jandy Aqualink PDA with Sub Panel Power Centre

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    Re: Algae starting with cover still on

    hey guys.....I live in the Boston area and typically don't open until May 1. But with the warm winter and 70 deg temps all this week in the forecast I decided to to take a peek under my cover. I noticed quite a bit of yellow algae on the sides of the pool. Never had it before so now I am concerned. The water is very clear still, there is just this yellow stuff along the sides.

    I really don't want to open for another month at least. I am also concerned that with the current warm weather stretch, the algae will get worse. So, will adding a lot of bleach now be harmful, helpful or neither?
    TF-100 Test kit, 24,000 gal. free form Vinyl. mybluepool AC-600 SWG, STA-RITE S7MD60 DE filter, 3/4 HP STA-RITE MPRA6D pump, Polaris 280 w/booster, Raypack Propane heater, Looplock mesh cover; All located in New England.

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