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Thread: some basic questions on pressurized sand filtration

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    Join Date
    Mar 2016

    some basic questions on pressurized sand filtration

    i know this might be out of the norm but here goes. i am wanting to use a small doheny sand filter with my saltwater aquarium sump system.
    i want to make sure that it wont filter out dissolved salt(pretty sure it wont, but want to be sure) andif i did get alot of air in the system with the gates open in the filter position how likely is to blow the cap off.seems pretty unlikely to me but i am no pro.

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    DaninFLA's Avatar
    Join Date
    Apr 2015
    Sarasota, FL

    Re: some basic questions on pressurized sand filtration

    i would recommend posting to an aquarium forum. from your post, sounds like maybe you are talking about a fluidized sand filter, which can be done, not not typically on saltwater systems...and no, it will not filter out dissolved salt, you need a very fine membrane for that, like in a RO/DO setup.

    from my experience in saltwater aquariums, you dont need that type of filtration anyway, loading up the sump with live rock is your best bet and then using a filter sock on the drain return is fine. but thats off topic for a pool forum
    9,000 gallon in-ground Saltwater pool, plaster, cartridge filer, 1.0 hp pump, Hayward T-15 SWCG, TF-100
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    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    DFW, TX

    Re: some basic questions on pressurized sand filtration

    It will definitely not filter out dissolved salt. But, I agree with Dan, use live rock or bioballs.
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