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Thread: Pool Filter sand Affect PH

  1. Back To Top    #1

    Join Date
    Jun 2007
    Toronto, Canada

    Pool Filter sand Affect PH

    Hi, quick question here.
    Can different makes/types of Pool Filter Sand affect the PH?
    Personnaly I don't think so but I was asked about this on an Aquarium forum.
    It is just silica sand I believe. I couldn't find any MSDS sheets on this from the manufacturers.
    19790 US Gallons IG (75000 litres)
    Vinyl Liner
    16' x 32' kidney shape (kind of)
    Sand Filter

  2. Back To Top    #2
    Mod Squad JohnT's Avatar
    Join Date
    Apr 2007
    SW Indiana
    I really doubt it. The volume of sand is small compared to the pool, and it would have to dissolve into the water to change the pH. While a little dust probably mixes with the water when the sand is new, there is no significant erosion of the sand into the water.
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
    Hayward S244T Sand Filter with 1HP Whisperflo Pump. Liquidator C-201 and Solar Heat

  3. Back To Top    #3
    i dont think it does
    but the weather now that changes things

  4. Back To Top    #4
    Pool sand is silica so it is inert. However, different susbstrates are used in aquaria and some of them do have an impact on pH such as peat or crushed coral and dolomite (the first lowers pH while the second two can raise it.)
    However if there are any impurities in the sand it could have an impact, which is why any substrate for an aquarium needs to be well rinsed first.
    As an aside, there ARE sand filters made for large aquaira that are identical to the ones made for pools. In fact, Pentair makes them! (The make a lot of aquarium equpment.) I have actually built slow sand filters for aquariua and regular filter sand is all that is ever used, along with pea gravel.

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