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Thread: First timer, just opened pool and put in chemicals, need help. Water is green

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    First timer, just opened pool and put in chemicals, need help. Water is green

    This is my first season opening the pool and I need help. The water was dark green and is now light green after a day.

    Here are my numbers:

    FC 6.5
    CC 2.5
    TC 9.0
    pH 8.0
    CH 300ppm
    TA 140
    CYA <20 (I could still see the black dot with the tube filled to 20)

    Is there anything that I need to raise or lower or keep things as is? I've been grounding up Tri-Chlor for Chlorine. I'm in MD and replace almost all the water every season, so no need to worry about high CYA.



    Grayson
    Outdoor concrete pool, 14,000 gallons, Purex Triton Clean & Clear Plus cartridge filter.

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    Mod Squad YippeeSkippy's Avatar
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    Re: First timer, just opened pool and put in chemicals, need help. Water is green

    Do you have the right test kit? One that contains the all important FAS-DPD test? TF-100 or Taylor's K-2006C are the ones we recommend. No others. For your size pool I'd go for the TF-100, more bang for the buck.

    What chemicals did you put in?? Have you read this: ABCs of Pool Water Chemistry

    Your pH is too high. Bring it down to 7.2 for a SLAM procedure to rid your pool of the algae that's making it green. Read this: SLAM

    Raise your CYA to 30ppm so you can hold your FC and not sacrifice it to the sun gods.

    Your TA will come down naturally as you drop your pH with muriatic acid.

    Scoop out as much debris as you can from the pool, it will speed up the SLAM when the FC doesn't have to be expended oxydizing leaves and such.

    Holler back with any questions
    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

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    Re: First timer, just opened pool and put in chemicals, need help. Water is green

    Yes, I used the TF-100 kit for my numbers. I guess I'll just wait for the tri-chlor to lower my PH and raise my CYA, since it naturally does that.
    Outdoor concrete pool, 14,000 gallons, Purex Triton Clean & Clear Plus cartridge filter.

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    Mod Squad jblizzle's Avatar
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    Re: First timer, just opened pool and put in chemicals, need help. Water is green

    The trichlor is going to be WAY too slow to get your pool fixed up.

    You need to follow the ShockLevelAndMAINTAIN Process.

    Best to add stabilizer to get the CYA to 30ppm, lower the pH with muriatic acid, then use bleach for the SLAM. After passing the 3 criteria to complete the SLAM, you could use the tablets to maintain the FC and slowly raise the CYA if needed.
    Jason, TFP Moderator
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    Re: First timer, just opened pool and put in chemicals, need help. Water is green

    The trichlor is going to be WAY too slow to get your pool fixed up.
    A BIG +1 on that. Be smart when you adjust your chemistry. Get your CYA up to about 30 now with CYA. Then use bleach or liquid chlorine to bring your FC up to 16 ppm or so and KEEP IT THERE.

    You will have a green pool for weeks unless you follow the SLAM procedure correctly

    Save the pucks for when you go on vacation
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    Mod Squad kimkats's Avatar
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    Re: First timer, just opened pool and put in chemicals, need help. Water is green

    Lets get that child IN the pool having fun!

    Please do the SLAM after adjusting the levels suggested. It will be MUCH faster this way so she can go swimming!

    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: First timer, just opened pool and put in chemicals, need help. Water is green

    Thanks for the advice. I was grounding up 2 of the trichlor pucks per day to get the chlorine up. Will that not work?

    I wonder how many gallons of bleach I'll need. One problem is that I'm a new owner to the pool and don't know the volume.
    Outdoor concrete pool, 14,000 gallons, Purex Triton Clean & Clear Plus cartridge filter.

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    Mod Squad kimkats's Avatar
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    Re: First timer, just opened pool and put in chemicals, need help. Water is green

    Here is your new best friend:

    http://www.troublefreepool.com/calc.html

    THIS tool will be all you need..........it will take some getting used to....chit,chat to get to know each other. Look towards the bottom and you will see where there is a place to put in your pool measurements. Do that and come back to tell us your pool size.

    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: First timer, just opened pool and put in chemicals, need help. Water is green

    Another question. Is it ok for the pressure to be 30psi while it is clearing all of this algae? Should I put the filter to "Close" before or after I turn on the pump?
    Outdoor concrete pool, 14,000 gallons, Purex Triton Clean & Clear Plus cartridge filter.

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    Mod Squad jblizzle's Avatar
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    Re: First timer, just opened pool and put in chemicals, need help. Water is green

    Depends on what your normal clean pressure is. You should clean the filter when the pressure rises 20-25% over the clean pressure.

    There is no need to change the filter settings unless you are backwashing, etc (and you should NEVER change them while the pump is running).
    Jason, TFP Moderator
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    Re: First timer, just opened pool and put in chemicals, need help. Water is green

    Assuming you have a sand filter (signature please ) Do a backwash. When it's clear, do a rinse for 20 seconds. Then back to filter. Note the psi. That is your starting point. When the psi reaches a 25% increase, then you backwash/rinse/filter again. "Close" is just that, like closed for the winter.

    Always rotate the handle that changes between filter modes in the same direction.
    32K gallon Plaster - 1hp Hayward 2 speed Super Pump - Hayward S200 Sand Filter - TF100XL
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    Re: First timer, just opened pool and put in chemicals, need help. Water is green

    Is this a sand filter? It has 4 big filters in it:


    I don't have a backwash option, unfortunately.

    The top has a pressure gauge with a twist knob, to "close" and "open". What position should I set it at before turning on the pump and what should it be set at while the pump is running?
    Outdoor concrete pool, 14,000 gallons, Purex Triton Clean & Clear Plus cartridge filter.

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    Mod Squad YippeeSkippy's Avatar
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    Re: First timer, just opened pool and put in chemicals, need help. Water is green

    That looks to be a cartridge filter, which can be opened up and the filters washed out and inspected.
    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

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    Mod Squad kimkats's Avatar
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    Re: First timer, just opened pool and put in chemicals, need help. Water is green

    Do a google search to find you manual. It sounds like you need to clean your filters. It will be a messy, wet job but needs to be done I bet. Let us know if you need any help after you find your manual.

    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: First timer, just opened pool and put in chemicals, need help. Water is green

    The previous owner didn't leave a manual and it seems to be pretty old; google search didn't turn anything up. I do think that the valve should be "closed" when running the pump. When I tried running the pump with it "open", it was making a hissing noise.
    Outdoor concrete pool, 14,000 gallons, Purex Triton Clean & Clear Plus cartridge filter.

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    Diane T.'s Avatar
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    Re: First timer, just opened pool and put in chemicals, need help. Water is green

    No expert here, but it looks like the operating instructions on the filter label are still legible.
    IG 15,000 gal vinyl Grecian SW, Hayward SWG, Pentair whisper flow pump, sand filter, Aquacal ice breaker heat pump. Finished August 2015, screen enclosure, TF 100

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    Mod Squad kimkats's Avatar
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    Re: First timer, just opened pool and put in chemicals, need help. Water is green

    Maybe not an expert but oh so very observant! Good job!

    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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    Mod Squad jblizzle's Avatar
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    Re: First timer, just opened pool and put in chemicals, need help. Water is green

    Quote Originally Posted by Grayson73 View Post
    The previous owner didn't leave a manual and it seems to be pretty old; google search didn't turn anything up. I do think that the valve should be "closed" when running the pump. When I tried running the pump with it "open", it was making a hissing noise.
    What valve are you talking about that has a closed and open? The air release valve on the top? If so, you should run the pump and open it until water is shooting out and then close it. This purges the air from the filter. You should only need to do then when you open up the system (filter or pump).

    That is indeed a cartridge filter.
    See this: Pool School - Maintenance and Cleaning of Pool Filters
    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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    Re: First timer, just opened pool and put in chemicals, need help. Water is green

    Quote Originally Posted by jblizzle View Post
    What valve are you talking about that has a closed and open? The air release valve on the top? If so, you should run the pump and open it until water is shooting out and then close it. This purges the air from the filter. You should only need to do then when you open up the system (filter or pump).
    Yes, that's the one. Interesting, I thought that if water was shooting, out, I was breaking it. Thanks so much!

    All, I cleaned the 4 cylinder filters that was inside,..so much dirt! After that, it went down to 12PSI! Thanks to all!

    Now to continue to slam to get rid of the green water :/
    Outdoor concrete pool, 14,000 gallons, Purex Triton Clean & Clear Plus cartridge filter.

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    Diane T.'s Avatar
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    Re: First timer, just opened pool and put in chemicals, need help. Water is green

    PS - I was able to find the owner's manual for the same name filter, just newer. The bottom label shows it's a Pentair Clean and Clear Plus cartridge filter. With a model number you should be able to find it if the label instructions aren't enough to help you.
    Looks like we were posting at the same time! Glad you've made progress.
    IG 15,000 gal vinyl Grecian SW, Hayward SWG, Pentair whisper flow pump, sand filter, Aquacal ice breaker heat pump. Finished August 2015, screen enclosure, TF 100

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