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Thread: Algae with high chlorine levels and high metal levels.

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    Join Date
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    sweetwater
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    Algae with high chlorine levels and high metal levels.

    Hello,
    Just joined group and first post.
    We have had our pool for 7 years and have fought through some issues but are stumped on this one.

    Water went from cloudy to green over night. We have had lots of rain and use of pool, but never let the chlorine dip.
    Treated water with algaecide (3% copper) didn't help...

    I took water sample to pool place. I was told copper was way high and don't use that again, he said I need to purchase "metal free" to get levels back down. then treat algea with another product that doesn't contain copper. Do you agree with this?

    Per previous reads from site I have ordered a TF-100 Test Kit with optional XL option.

    Here are the numbers.
    FAC 5
    TAC 5
    CYA 90
    TA 120
    pH 7.8

    Thanks for any help you can give me.
    Resized_20160628_065751.jpg
    Last edited by ganthers; 06-29-2016 at 02:18 PM. Reason: pic add

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    mikemass's Avatar
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    Northern Howell, NJ
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    Re: Algae with high chlorine levels and high metal levels.

    Is it possible that the green is not algae (as you have 0 CC's), but oxidized copper?

    5 FC with a 90 CYA is too low. You should be at 7 - 10, (assuming no SWG). If that's not algae now, there soon will be.

    I love the: "Buy this, it contains copper". Then the: "Now buy this. You have too much copper"

    Lets get a little more info from OP. Get this straightened out and forget that Algaecide ever existed afterward.

    For now:

    Pool size in Gallons?
    What you been using to Chlorinate?
    25 + year pool owner. Current pool (going on 11th year) - 38K gallon in ground Gunite/White Plaster, Spillover Spa, Hayward Cartridge Filter, Hayward 450k BTU NG Heater, Hayward Goldline Aqua Logic control with T-Cell-15 Salt Water Cell, Dolphin Explorer.
    You Need: Bleach, a A Test Kit & a Bookmark to "Pool School". Now what's your question?

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    Join Date
    Jun 2016
    Location
    sweetwater
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    Re: Algae with high chlorine levels and high metal levels.

    Hello and thanks for the response.
    Pool size is 15x30, 9.5K gallon above ground.
    We use super shock-it and 3" tablets, We have been using bleach since this has started though.
    The numbers I gave were from test at pool store yesterday, test strip shows a different story.
    CyA 200
    FC 10
    Might have to keep FC up and wait for real test kit, hopefully a day or two away.

    After we added the algaecide with Copper and it didn't help I thought I might be dealing with oxidized copper turning water green but not positive of anything. I can sweep the bottom and can make out a green cloud churning. Does that represent algae?
    Sweetwater, TX
    15x30 above ground

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    Mod Squad tim5055's Avatar
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    Re: Algae with high chlorine levels and high metal levels.

    Quote Originally Posted by ganthers View Post
    CyA 200
    FC 10

    I can sweep the bottom and can make out a green cloud churning. Does that represent algae?
    Probably algae, but could be dirt. From the color I'm saying in addition to what the stuff is on the bottom you have a lot of copper...

    If the CYA numbers are anywhere close you are looking at a substantial water exchange to get the CYA in line and that should get rid of a lot of copper at the same time.
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    sweetwater
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    Re: Algae with high chlorine levels and high metal levels.

    Hello,
    OK we are swimming in beautiful blue clear water and just in time, it's 100 everyday in TX.

    I just wanted to share with group what I did and what I'm doing going forward. Please let me know if you disagree or think I should be doing something a little different.

    First I received my TF-100 test kit. This was worth every penny.

    CYA was so high we did a huge water dumb, about 80%. Water was still cloudy so we slammed until it cleared (about 5 days)

    Current #'s
    FC 4
    CYA 30
    TA 150
    pH 7.6

    My pH is climbing so I'm adding muraitic acid to lower my TA to see if this will help.

    FC is 4 in the morning and 2 by late evening and it is taking me 40 ounces of liquid bleach to get it back to a 4.

    So going forward I plan on just using the bleach, no more shock or tablets. (Unless I would like to raise my CYA)

    Thanks for the help.
    Sweetwater, TX
    15x30 above ground

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    Mod Squad tim5055's Avatar
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    Re: Algae with high chlorine levels and high metal levels.

    Great plan, but I would bring the FC up 1 or 2 ppm. I'd say to start at 5 or 6 in the morning to make sure you never drop too low.
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    Join Date
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    sweetwater
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    Re: Algae with high chlorine levels and high metal levels.

    Quote Originally Posted by tim5055 View Post
    Great plan, but I would bring the FC up 1 or 2 ppm. I'd say to start at 5 or 6 in the morning to make sure you never drop too low.
    Will do, I was a little nervous about getting it to low.
    Sweetwater, TX
    15x30 above ground

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