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Thread: WHY? are we supposed to put SWCG on pool outlets?

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    WHY? are we supposed to put SWCG on pool outlets?

    HI Eh!

    After a 16 day vacation (floated a load of Tri-Chlor) I found my pool looking awesome! ... but with 30ppm of chlorine and ridiculous stabilizer levels. Doh!
    (an expensive 20" drain later and things are better....and now it's raining like crazy!)

    I've decided I'd like to go with SWCG and make our busy life a bit easier, when it comes to the pool.


    So here I am researching and one glaring thing I can't get a logical answer to:

    Why must these things be right at the pool outlets?
    I'm thinking that I'd rather whack the filter with max %cl and kill any bio in there, and the rest of the %cl can go to work on the pool.

    I've got a DE filter. I'm certain if I had/have algae or bio-critter-sludge, that it would be living on my filter media. It's too big to get through, but it's still living there...pooping in my pool. I do see a lot of decomposing bugs in my pump skimmer, so there's something to chew on in there...

    I don't have a heater, and would/will totally plumb it separately anyway. (my 1/3hp waterfall pump couldn't handle the heater back pressure...but it hammers big water through a DE for pennies!)

    I'm running upwards of 50-60 GPM flow rates so I'm figuring high %cl wouldn't stick around in my filter long enough to hurt it. Besides...Tiger-Flex is no miracle pipe, what's the diff between it seeing high %cl versus a thick, solid filter casing?

    I understand the 'buffering' the pool volume offers to quickly disperse the high %cl.

    This stuff is a gas and it certainly must need a minimum pipe run after the cell, to recombine. I say put it right before my DE filter and swirl the **** out of it, before running through 10-20 feet of pipe.



    What am I missing here?

    Is it the risk of cl gas buildup in the cavities? (The Watermaid mentions their gas trap and clever installation to prevent that.). It would suck to get a snoot full of cl gas when I burp my DE... I could see how pipe only, just before jet, would pretty much eliminate that issue.
    Last edited by Sponge1971; 07-27-2014 at 02:45 AM. Reason: More to add
    5300 Gallon (15' x 52" composite & aluminum - AG) <> Sta-Rite Mod3 60sqft DE Filter & Sta-Rite 2" Dyna-Wave Pump & 2" plumbing = ~4psi drop @ ~50gpm flow <> (3" suction line, modified skimmer) - Two 1.5" returns at 180degrees apart (skimmer side return is piped down to floor) <> Taylor K-2006 test kit

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    aussieta's Avatar
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    Re: WHY? are we supposed to put SWCG on pool outlets?

    you will foul your salt cell if it is placed before the filter
    anywhere in plumbing after filter will be ok
    SWG inground peanut shaped eco-bright concrete pool
    50,000 litres 13,000 gallons
    Lincoln Salt Chlorinator, 25 gram cell Sand Filter with glass media
    Taylor K2006-C test kit, Taylor K-1766 salt test, Dolphin M500 pool cleaner
    are you taking care of your pool or is the poolshop taking care of you

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    Mod Squad jblizzle's Avatar
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    Re: WHY? are we supposed to put SWCG on pool outlets?

    Hydrogen gas would build up in the filter.
    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: WHY? are we supposed to put SWCG on pool outlets?

    Quote Originally Posted by aussieta View Post
    you will foul your salt cell if it is placed before the filter
    anywhere in plumbing after filter will be ok
    <face palm>...Of course! <sigh> I'm dumb ):

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    Mod Squad woodyp's Avatar
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    Re: WHY? are we supposed to put SWCG on pool outlets?

    ...........and nothing lives in the darkness of your filter anyhow.
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
    2 Speed Hayward Power-Flo Matrix 85 g.p.m. 22" 250lb. sand filter hard plumbed
    Pool Rover Jr., Pool Blaster Max, Diver Dave TF100 Test Kit/Speed Stir
    Margaritaville Frozen Concoction Maker, Liqour Chiller, & Drink Mixer & Party Tub----Collect 'um all!

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    Re: WHY? are we supposed to put SWCG on pool outlets?

    Ok.... Now I feel *really* dumb.

    Never thought about the whole "every-living-thing-on-the-planet-needs-sunlight" rule. ...for the most part anyway...we can ignore the super-bacteria living on a roasting hot sulfur vent, two miles down, on the ocean floor. ...although... they *do* live in water....and my filter is full of water....<gasp>! (;
    Oh, I'm ok though.... My pool is fresh water and these bacteria live in salt water.....
    .
    .
    Wait...'S'.'W'.c.g. ... There's something about that acronym that's got me thinking.... Oh well, whatever. I'm sure I'll be fine once I get it all setup...

    <double giggle>


    Seriously though,
    Thanks for the head slap.
    I've decided to go el-cheapo Intex and just buy a new one every few years. Co-worker swears by it, (3rd year still working) and The Forums do have favorable experiences...
    I can afford this experiment and I'm confident I'll be able to get it to baseline me a few ppm of chlorine. I can old-school the infrequent heavy uses...

    Thanks,
    Eric

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