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Thread: Would a large cartridge filter work with commercial pool?

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    Aquatica's Avatar
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    Would a large cartridge filter work with commercial pool?

    I'm now thinking my recommendation of a Pentair Triton 2 sand filter was not the best for a 50,000 swg pool as there will be backwashing and loss of salt and cya.

    Maybe a Hayward SwimClear Cartridge 525 sq. ft. Pool Filter - C5030 would be better? I know cleaning these monsters is a pain.

    This pool is not far from the beach so some sand gets into the pool.

    Any advise would be much appreciated. Thanks!

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    Re: Would a large cartridge filter work with commercial pool

    No "expert" advice but common sense tells me the bigger the pool, the more likely a sand filter. The cost of a huge cartridge plus the physical demands of removing and cleaning it may exceed the water and chemistry lost to backwash.

    Probably not even worth .02 cents but just food for thought.
    Dave S.
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    Re: Would a large cartridge filter work with commercial pool

    I would think that sand we be the way to go too. I can't imagine cleaning cartridges for a 50K gallon pool.

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    Re: Would a large cartridge filter work with commercial pool

    Ok, I am going to buck the trend here a little. A 525-sqft cartridge filter for a 50k pool exceeds NSF/ANSI 50 minimum requirements by 40%. So unless the pool gets really dirty really fast, you probably will be able to get away with once a year cleaning or at most twice a year cleaning. Add to that the Salt and CYA issue, I think it might not be a bad decision.

    Also, I clean my filter once a year and it really isn't that bad. I can usually clean each of the four filters in 10 minutes so less than an hour total.
    Mark
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    Aquatica's Avatar
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    Re: Would a large cartridge filter work with commercial pool

    Thanks for the feedback. Much appreciated.

    Mark that's what I was thinking. We could use a cartridge with this pool. We have one of these large filters in a 25,000 gallon pool since Dec last year and the pressure gauge has stayed at 10 p.s.i. haven't had to clean it yet but did right after the resurfacing. took sometime to clean it but I think with the help of a blaster 3000 cartridge cleaner it might speed things up.

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    Aquatica's Avatar
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    Re: Would a large cartridge filter work with commercial pool

    I had an idea with the removal of water from one of these large cartridge filters which is necessarily to do before cleaning. There is quite a bit of water that comes out of these large filters.

    to save water, cya, salt and ch could we just attach a hose to the drain valve and run it back to the pool?

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    mas985's Avatar
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    Re: Would a large cartridge filter work with commercial pool

    An other option is to just open the bleeder valve and most of the water will get siphoned out of the return port. It takes a lot longer, although if you open the pump lid, it will siphon much faster. You should be able to get most of the water out this way.
    Mark
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    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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    Aquatica's Avatar
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    Re: Would a large cartridge filter work with commercial pool

    Quote Originally Posted by mas985
    An other option is to just open the bleeder valve and most of the water will get siphoned out of the return port. It takes a lot longer, although if you open the pump lid, it will siphon much faster. You should be able to get most of the water out this way.
    Thanks Mark. I was thinking the water might be dirty coming out of the drain. maybe the bleeder valve would be better..

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    Re: Would a large cartridge filter work with commercial pool

    Code:
    Ok, I am going to buck the trend here a little. A 525-sqft cartridge filter for a 50k pool exceeds NSF/ANSI 50 minimum requirements by 40%. So unless the pool gets really dirty really fast, you probably will be able to get away with once a year cleaning or at most twice a year cleaning. Add to that the Salt and CYA issue, I think it might not be a bad decision.
    
    Also, I clean my filter once a year and it really isn't that bad. I can usually clean each of the four filters in 10 minutes so less than an hour total.
    A lot of this will depend not only so much on the gallonage of the pool but also the bather load. A home pool @ 50,000 gallons with a family of 4 using it several times a week is a lot different than a 50,000 gallon public or commercial pool with 75, 100, 200 bathers per day. If you want to cut down on the back washing of your sand tanks and save water, chemicals, etc. you may want to consider looking the MultiCyclone from Waterco (disclaimer: I'm a distributor for Waterco). It has been third party tested to cut down on backwashing quite a bit. There is a small past thread on TFP about it: waterco-multicyclone-centrifugal-filter-t28631.html
    Josh Ulfers - josh@saltpoolguys.com - 888-725-8766
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