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Thread: Green pool... Help!

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    Green pool... Help!

    Went on vacation and the person watching our house did not care for our pool. Came home to a dark green disgusting mess. Been working on it for about 4 weeks now and it's still green although we can almost see the bottom.

    Here are our numbers as of today
    Free chlorine- 6.03
    Ph- 6.4
    Alk- 79
    Cya-34

    We have replaced the sand for our filter. The pool store where we've been getting our numbers checked is trying to convince my husband to once again replace the sand with sand from their store. My husband used the pool filter sand from lowes and seems to think maybe the filter is not working because the gauge is reading 18?
    Please help! He's getting frustrated and seems to want to follow the pool store and I've been saying no because we already tried it and it's not working. They are telling us our numbers are fine yet I'm looking at a green pool!

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    Mod Squad jblizzle's Avatar
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    Re: Green pool... Help!

    Welcome to TFP!!!

    Do yourself a favor and stop listening to the pool store.

    Your pool is green because the FC level dropped too low while you were gone. To clear it up you need to follow the ShockLevelAndMAINTAIN Process (right now your FC is too LOW!!!). To do this correctly you will need to invest in one of the Recommended Test Kits that includes the FAS-DPD chlorine test. BTW, tftestkits.net ships out of NC, so you should be able to get the TF-100 in 1-2 days.

    Sand in your filter almost never needs to be replaced. A filter will NEVER clear up a green pool. You have to kill everything faster than it is reproducing and then the filter will pull out the dead stuff.

    Not knowing your background, I highly recommend you start reading Pool School, starting with the ABCs of Water Chemistry so that we are talking the same language.
    Jason, TFP Moderator
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    Re: Green pool... Help!

    Yes and the pool store is telling us our fc is way too high. This is only our second year with the pool so it's all new to me. I banned him from buying anything more at the pool store.

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    pwrstrk's Avatar
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    Re: Green pool... Help!

    Welcome to TFP !
    I'm going to suggest you take Jason's advice. Read all the links he gave while your waiting for your test kit to come. When your kit arrives post up a full set of results and we can get things fixed up for ya.
    When you have questions don't hesitate to ask ! 😎
    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

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    Smykowski's Avatar
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    Re: Green pool... Help!

    Welcome! +3(or 4?) on Jason's advice.

    If you need something more concrete to convince your husband it works, head to the defeating algae forum and look at some success stories. The transformations are nothing short of astounding, and the proof is right there in the pictures.
    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
    The most important article on this site - The ABCs of Pool Water Chemistry

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    Mod Squad kimkats's Avatar
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    Re: Green pool... Help!

    Good for you! Welcome to the best little (or not so little) pool forum in the world-TFP!

    You are on the way to a clear pool. Read post #2 in this thread. He is telling just what you need to do. It WILL work and it will be cheap once you get the pool clear.

    Tell your husband that that pool store's (store=a place that sells you stuff) "free" tests are not so free in that they test your water, tell you the numbers they came up with (that are WRONG most of the time), then tell you what to BUY.

    In this case you can spend a little money (buy a good test kit) to save a LOT of money (only having to buy chlorine for the most part).

    Of course it will take quite a bit of chlorine to clear the green but after it is clear you are set!

    Let us know if there are any other questions or things we can help with.

    Kim
    TFP Moderator 33x52 round AG 25,600 gals Sand Filter 1.5hp Pump - 2 Speed, SLAM, Pool School, Recommended Levels, Recommended Chemicals, Pool Math, Chlorine/CYA Chart, TF-100 Test Kit

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    Re: Green pool... Help!

    My husband is all for skipping the pool store, he just seems to need me to tell him exactly what to do and I'm new to the pool world. I'm going to order a test kit tonight. I'm guessing there's no way we will be swimming by this weekend. What's the difference in using bleach and chlorine while slaming it?

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    Mod Squad jblizzle's Avatar
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    Re: Green pool... Help!

    depends what you mean by "chlorine". If you mean liquid chlorine, then the only difference from bleach is the strength. You should not use any form of solid chlorine for the SLAM process.

    A couple more to read:
    Recommended Pool Chemicals
    How to Chlorinate Your Pool
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Re: Green pool... Help!

    Re: your filter, what was the pressure on it like before you changed the sand?

    Also +6 to Jason's advice. ...and this; http://www.troublefreepool.com/calc.html will help you figure out how much bleach/liquid chlorine you need to add to the pool, per your CYA and pool size. That nifty little page has been a godsend throughout the process, as well as all the great advice around here.
    30K gal IG vinyl, Hayward S244T sand filter, Hayward C48L2N134B1 Self Priming Super Pump

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    Re: Green pool... Help!

    The gauge has always read around 18 I believe.
    I ordered the k-2006 test kit last night. We went ahead and poured bleach in based on the calculations from our numbers yesterday and have been going out every few hours to stir it up, brush and add more. Still looks the same. My husband wants to switch to chlorine today.

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    zimm's Avatar
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    Re: Green pool... Help!

    Bleach IS chlorine. You'll need to SLAM the pool (read that page again in pool school). Keep the pump running. Keep the FC levels up. It's going to take days if not a week or two to be sparkling clear, but we'll get you there. The pool will be green, then go cloudy white as the algae dies, then the filter will slowly clear it all out.

    Until you get your K-2006, you're not going to know how much chlorine you have above 5.0, so it's a crapshoot right now. Be patient!
    45'x12' 17k gal, IG plaster, Pool Pilot Nano+ SWG, 1/2hp Whisperflo pump, PAC-FAB TA-60D sand filter, Raypak 266 heater
    Pool School + Test Kit + Pool Math = Trouble Free Pool

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    Re: Green pool... Help!

    image.jpg

    Here we are today after the suggested amount of chlorine. Still waiting on test kit.

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    pwrstrk's Avatar
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    Re: Green pool... Help!

    At least it's not green ! Do your best until the kit comes, then post up some test results. You'll get this all fixed up in no time !! 😎
    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

  14. Back To Top    #14

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    Re: Green pool... Help!

    image.jpg

    Still waiting on test but here it is again today. Not so cloudy. We haven't added anything else to it because we don't have the test. Should we keep adding chlorine or wait?

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    Mod Squad jblizzle's Avatar
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    Re: Green pool... Help!

    Who did you order from? Clearly you did not take the recommendation of ordering from tftestkits.net ... you would have had the kit yesterday at the latest.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
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  16. Back To Top    #16

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    Re: Green pool... Help!

    Quote Originally Posted by jblizzle View Post
    Who did you order from? Clearly you did not take the recommendation of ordering from tftestkits.net ... you would have had the kit yesterday at the latest.
    Yes I actually did only I got the k-2006.

  17. Back To Top    #17
    Mod Squad jblizzle's Avatar
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    Re: Green pool... Help!

    Wow, sorry about that. It had to have shipped out on the 29th if you ordered the evening of the 28th and being in the same state I would have though you would have delivery by the 30th. I hope it arrives today, I am puzzled if it does not.

    BTW, with a SLAM in your future, you likely will need to order FAS-DPD reagent refills since you only got the K-2006 and are likely to run out before you are done. May as well get CYA refill while you are at it.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
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