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Thread: Spring peek - concerning stains. How should I tackle?

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    Spring peek - concerning stains. How should I tackle?

    Last fall we didn't get around to cleaning all the leaves out of our pool cover after they fell. Long story, part lazyness and part too many ****ed trees that dumped all their leaves into the pool at once just before things froze up for the winter.

    Anyhow, I was out today starting to clean up the mess and get them out, pumping water off the cover, etc. I started pumping off water a few weeks ago as the spring melt took hold (There was several feet of snow and ice from yet another brutal winter here) but just today I got enough off where I could start inspecting things.

    FWIW I'm still probably 3 weeks from wanting to open the pool but I like to start getting things ready around now.

    Anyhow, I peeled back the cover around my stairs and immediately noticed some concerning stains. I'm going to guess that they're a direct result of all the tannins from the leaves sitting on the cover and some of that stained water going through the winter cover into the water underneath.

    I got out my vinyl and stairs cleaner and a bristle brush and had limited success. I went and got some liquid cholorine and worked with that and had good success on the stairs (they cleaned right up) but the liner, not so much.

    How should I tackle this? I'm now contemplating removing the winter cover today if I can (There's still some spots with ice), raising the water level above the stains (which are now above the waterline, see pics), and hitting the pool with some chlorine so that the stained area is sitting underneath the water level.

    Thoughts?

    IMG_5800 by oshawapilot, on Flickr
    Mark
    -- Courtice, Ontario, Canada. "Cabo San Backyardo"
    12x16 3/4 inground - Hayward 3400VSP, Sand Filter, Rooftop 4x20 solar w/ Hayward GL235 automation.
    Previously installed at a neighbors, before, during & after photos HERE!

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    Richard320's Avatar
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    San Dimas, CA (LA County)
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    Re: Spring peek - concerning stains. How should I tackle?

    Organic stains should fade away in a few weeks once the proper FC level is in the water.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Re: Spring peek - concerning stains. How should I tackle?

    Quote Originally Posted by Richard320 View Post
    Organic stains should fade away in a few weeks once the proper FC level is in the water.

    Thanks for the reassurance.

    I finished draining the cover and getting as much of the leaves and **** off the top as I could, peeled it back somewhat, and this is the gong show underneath. See pic below. It's not great as there was reflection on the surface of the water, but you get the idea.

    I'm reluctant to add any chlorine as I've no circulation to move it around, and it's just going to be consumed immediately anyways, but I'm contemplating getting a jug of algaecide (yes, I know, a bad word around here) and hitting it to just stop things from getting worse? The forecast is for pretty darned warm temps and we are on vacation in a few weeks (and the housesitters are *NOT* into pool maintenance) so there's no option except to let it sit really, but I envision this nightmarish black swamp with stains that are even worse by the first weekend in May when I get down the opening it.

    Am I overthinking this? Should I just put the cover back on, have a few drinks, and forget about it?

    - - - Updated - - -

    And what about raising the water level above the stained areas in the meantime...will that prevent them from "setting" any worse..or does it not matter? With the water/snow/ice weight off the cover the water level in the pool has dropped a lot as you can see from the waterlines.

    Dropping the garden hose in there isn't a big deal honestly if it's at all helpful. Obviously when I go to open it I'll be adding a lot of water anyways, so what I add now won't go to waste.
    Attached Images Attached Images
    Mark
    -- Courtice, Ontario, Canada. "Cabo San Backyardo"
    12x16 3/4 inground - Hayward 3400VSP, Sand Filter, Rooftop 4x20 solar w/ Hayward GL235 automation.
    Previously installed at a neighbors, before, during & after photos HERE!

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    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: Spring peek - concerning stains. How should I tackle?

    Algae won't grow well if there's no sunlight. If your cover is solid, put it back on and deal with the mess later.

    You'll have the same problem with algaecides that you'll have with bleach - how are you going to mix it well without any circulation? What if it has copper in it? Metal stains are a whole lot harder to remove than organic tannin stains.

    And that's about all I can share on that. My pool is "open" 365 days a year in SoCal. It's just too cold to swim in and too expensive to heat.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Re: Spring peek - concerning stains. How should I tackle?

    Although I know opening season has long but passed us, I just thought that I would follow up for anybody who bumps into this thread in the future with a similar issue – as I was reassured, it took about three weeks but all of the stains did completely disappear. The pool is beautiful and stain free.

    I will not ever make the same mistake with pre-winter cover cleanliness ever again however!
    Mark
    -- Courtice, Ontario, Canada. "Cabo San Backyardo"
    12x16 3/4 inground - Hayward 3400VSP, Sand Filter, Rooftop 4x20 solar w/ Hayward GL235 automation.
    Previously installed at a neighbors, before, during & after photos HERE!

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