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Thread: Low CYA & SWG - what's my appropriate CH SLAM level?

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    Low CYA & SWG - what's my appropriate CH SLAM level?

    Opening the pool and starting the SLAM today. I've got a swamp this year - and the frogs that have moved in are in for a big surprise...

    The chart for CYA SLAM level with an SWG starts at 60. My CYA is in the 30's as far as I can tell. PH is 8+.

    Once I get the PH balanced - what is the appropriate amount of Chlorine with the CYA at 30? Would it be half as much as what's shown for a CYA of 60?

    I'm familiar with the process, and have a good test kit.
    16x32 in-ground vinyl liner, SGS Breeze 540 salt system, Pentair 1.5hp pump, Booster pump & Tagelus sand filter.

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    Re: Low CYA & SWG - what's my appropriate CH SLAM level?

    Following the shock level in the FC/CYA chart in my signature for a Non-SWG pool gives a FC level of 12.
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    Mod Squad pooldv's Avatar
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    Re: Low CYA & SWG - what's my appropriate CH SLAM level?

    You are on the right track. Shock levels are the same, salt or no salt. Adjust the ph and get to work. Look out frogs! LOL
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    Mod Squad tim5055's Avatar
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    Re: Low CYA & SWG - what's my appropriate CH SLAM level?

    I'm not sure they are in for a surprise.....

    I have two frogs that visit every night during the summer. FC of 15 didn't even slow them down. I'm still trying to figure out how they get out of the pool. I kept scooping them out and taking them to the lake, but every night they were back....

    Sigh......
    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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    Re: Low CYA & SWG - what's my appropriate CH SLAM level?

    Good luck! The frogs don't seem to mind my salty FC of 8-10 either!
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    Re: Low CYA & SWG - what's my appropriate CH SLAM level?

    Once you've completed the SLAM and passed the OCLT then you can add stabilizer to get back up to it's normal range (70-80) and fire up your SWCG.
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    Re: Low CYA & SWG - what's my appropriate CH SLAM level?

    Quote Originally Posted by ping View Post
    Following the shock level in the FC/CYA chart in my signature for a Non-SWG pool gives a FC level of 12.
    That's what I thought - I was a bit confused as to why there are 2 charts for SWG and non-Swg.

    Thanks!
    16x32 in-ground vinyl liner, SGS Breeze 540 salt system, Pentair 1.5hp pump, Booster pump & Tagelus sand filter.

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    Re: Low CYA & SWG - what's my appropriate CH SLAM level?

    Quote Originally Posted by tim5055 View Post
    I'm not sure they are in for a surprise.....

    I have two frogs that visit every night during the summer. FC of 15 didn't even slow them down. I'm still trying to figure out how they get out of the pool. I kept scooping them out and taking them to the lake, but every night they were back....

    Sigh......
    LOL!

    We don't have much problem with debris, but frogs, toads, wolf spiders, and those oily beetles are a pain... There's a farm behind us and they have a pond. Once in a while I'll take them back there and set them free, but mostly they get flung over the fence.

    In spring I'll pull dead toads out of the skimmer almost daily. Can never get my daughter or wife interested in emptying the skimmer... the spiders and toads were one thing, but since the day I found a baby snake coiled up under the skimmer cover - they won't go anywhere near it..
    16x32 in-ground vinyl liner, SGS Breeze 540 salt system, Pentair 1.5hp pump, Booster pump & Tagelus sand filter.

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    Re: Low CYA & SWG - what's my appropriate CH SLAM level?

    Same here and it's me A couple aren't that small.
    Have had snakes in there a few times and it makes me a bit cautious taking the cover off. I guide them out into the pool and net them to release back into the lawn as they help keep the voles away or at least at bay.
    '70s IG Vinyl 32K gal, Lazy L, Hayward SuperPump 1.5hp 120V, S240 Sand Filter W/DE
    Solar Blanket, Well Water, Borax Added, TF-100 tester. ? too cold
    1979, 275gal Conway Emerald Spa P-100-2, ES-2 Spa Pack, bromine floater, indoor
    TF-100, Best test kit - TFTestkits.net
    Please help keep the lights on, become a TFP Supporter!

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