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Thread: chelated copper sulphate pentahydrate

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    chelated copper sulphate pentahydrate

    I'm wondering about everyone's opinion on using poolrx's copper sulphate pentahydrate algaecide unit to control and prevent algea in the pool. Yellow algea tends to like my pool and can return easily.

    I have a 15,000 gallon IG pool with a DE filter.

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    Re: chelated copper sulphate pentahydrate

    Strongly recommend that you do not use copper.
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    domct203's Avatar
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    Re: chelated copper sulphate pentahydrate

    Welcome.

    I advise you stay away from any product that contains copper. Copper builds up over time and will stain your pool surfaces, and turn blond hair green.

    I would suspect your algae returns due to inadequate sanitizer (chlorine) levels.

    How do you normally chlorinate your pool?

    Can you post a complete set of recent test results?

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    Re: chelated copper sulphate pentahydrate

    Welcome to TFP!

    Opinion of copper: 100% against.

    Proper chlorine levels in relation to CYA levels will prevent algae.
    JD - 28' Round Above Ground Pool, 17,000 Gallons. Dual speed Jacuzzi pump with cartridge filter. Dual speed 1 HP pump, Hayward S210T sand filter
    Pool School - PoolMath

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    Re: chelated copper sulphate pentahydrate

    Currently my levels are
    Free chlorine 2.0
    Combined chlorine 2.0
    PH 7.6
    Alkalinity 120
    CYA 120

    - - - Updated - - -

    Thank you.. Just trying to figure out this pool stuff on my newish house

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    Re: chelated copper sulphate pentahydrate

    Your CYA is way high.
    With high CYA, you need much higher FC levels
    http://www.troublefreepool.com/conte...art-slam-shock
    That's why you have algae problems, you need to have very high FC at that CYA.

    Don't use tablets, they raise CYA. Use bleach or liquid chlorine.

    Really need to do a partial drain to drop CYA to something reasonable, then use chart to figure what FC should be.
    And CC of 2 is high, really should have little to no CC.

    BTW, after you get the CYA under control, consider adding borax or boric acid. It helps control algae, and just makes the water look better.

    Randy
    25,000 gal fiberglass pool, Raypak 336k BTU low nox RP 2100 gas heater, Pentair CCP520 520 sq ft Cart filter, Max-Flo VS2303VSP pump, diy control and automation system

    seperate spa, with own pump, cartridge filter, Hayward H200FDN heater, diy control and automation system

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    wjr75's Avatar
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    Re: chelated copper sulphate pentahydrate

    Polyquat 60 algaecide if you use anything which doesn't have copper. Don't really need it if you keep the CL/CYA at the right level.
    Inground 22k gallon gunite 15x31 main pool, 15x7 wading pool/sunning deck, hot tub/with overflow (9' octagon with limestone top) & slide NSWG, Aqua Blue Pebble Sheen
    Filter dual cartridge Sta-rite 450sq/ft, TF-100 Test Kit
    Heater Raypak 2100 400k btu cupro-nickel exchanger
    Auto pool cover, Polaris 280 auto pool cleaner, Jandy AqualinkRS8 Remote Control System

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    Re: chelated copper sulphate pentahydrate

    Thank you... I guess I'll start trying to bring down the cya while keeping chlorine high. Any suggestions on how high to keep chlorine while cya is high?

    - - - Updated - - -

    Just saw other thread... Ok is it safe to swim with chlorine at 8?

    Is partial drain only way to bring down cya, or will a cya reducer work?

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    Re: chelated copper sulphate pentahydrate

    Out of the dozens of folks who tried the CYA reducer, I think 2 of them saw a modest difference. 100% of them felt a lightening of their bank accounts.

    You need to drain about half your water at least. If you use a SWG a bit less than half, if you don't have a SWG you need to drain a bit over half....like 60%

    Refill and then never use any product that adds a hidden second ingredient (cya, calcium, copper, etc) in your water. Best to use single ingredient pool supplies when you're new to pool care so that you don't get caught with an unexpected surprise problem like too high CYA. Liquid chlorine is just that, only chlorine for the pool. Arm and Hammer baking soda is the exact ingredient as Alkalinity Up products yet 1/3 the cost. Learning things like this simplify the care of our water and pools.

    Do you have one of the test kits we recommend?

    Yippee
    Maddie :) 12K 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.
    Skippy's Pool Cooler --> Skippy's New Fountain Our Build --> Our Pool Solved Our Sloping Yard

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    Re: chelated copper sulphate pentahydrate

    Still need to purchase one of the recommended test kits... Not sure which is better to buy

    Any recommendations on brand and % on bleach?

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    Re: chelated copper sulphate pentahydrate

    The TF-100 is the preferred test kit....more reagents for the tests you do the most often. Easy to obtain refills (Sale on refills every March it seems)

    Tftestkits.net ships from NC..... PoolSupplyWorld.com ships from CA. Pick which one you think will get the kit there to you fastest

    Yippee

    - - - Updated - - -

    Oh yeah...as to bleach... get the freshest, cheapest stuff you can find. 8.25% is the standard laundry stuff, but if you check the pool aisle at wallyworld they sell stronger stuff (10%) which often goes on sale. No "outdoor" or "cleaning" or "scented" bleach... just plain old bleach.
    Maddie :) 12K 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.
    Skippy's Pool Cooler --> Skippy's New Fountain Our Build --> Our Pool Solved Our Sloping Yard

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    Re: chelated copper sulphate pentahydrate

    Thank you. This is so helpful.
    And CYA should ideally be in the 50-80 range?

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    Mod Squad YippeeSkippy's Avatar
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    Re: chelated copper sulphate pentahydrate

    If you have a SWG your CYA should be 80ish. For a non-CYA pool we recommend 30-40, except in hot sunny Texas and AZ and places like that we often say go a bit higher, like 50. So its because of being in Texas you get a little more. Folks in New Jersey don't.

    God bless Texas!! LOL
    Maddie :) 12K 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.
    Skippy's Pool Cooler --> Skippy's New Fountain Our Build --> Our Pool Solved Our Sloping Yard

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    Re: chelated copper sulphate pentahydrate

    Please read "The "ABC's of Pool Water Chemistry" up in Pool School. That's the place to start. It will also give you suggested ranges for the chemistry.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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