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Thread: New owner: sand filter question

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    New owner: sand filter question

    I just recently bought a home with a pool...not sure how long ago the sand was changed in the filter...this is my first pool and not sure how to change it if I have to...any websites out there to explain how to? Any help would be appreciated!! Not sure on so many things....
    15,000 Gal pool..sand filter...IG vinyl...Hayward Superpump 2.0 HP..not sure of flow rate...built in mid 1990's

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    Mod Squad JohnT's Avatar
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    Re: New owner: sand filter question

    Welcome to the forum.

    Sand seldom needs changing. You can generally pull the multiport or cap off the filter and look at the sand to see if there are issues.
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
    Hayward S244T Sand Filter with 1HP Whisperflo Pump. Liquidator C-201 and Solar Heat

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    Re: New owner: sand filter question

    Thanks for the reply!! Do I need to drain the water from the filter before I open it?? Im sorry for the question, but I really know nothing about this stuff..Thank you for your help...also, if I don't know if it has ever been changed should I change it or let it go and what would I look for if there is a problem??
    15,000 Gal pool..sand filter...IG vinyl...Hayward Superpump 2.0 HP..not sure of flow rate...built in mid 1990's

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    Smykowski's Avatar
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    Re: New owner: sand filter question

    There are very, very few scenarios where you actually have to change the sand. Do a forum search for "channeling" and you can learn to flush out the filter and clean the existing sand.

    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
    The most important article on this site - The ABCs of Pool Water Chemistry

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    nedchavez's Avatar
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    Re: New owner: sand filter question

    I've been in my house 14 years and never changed the sand! My water is crystal clear! I will probably add some sand in the spring because you do lose a little when you back flush. I didn't ask the previous owners if they changed the sand, but going by the lack of upkeep on the rest of the house, I'm sure they didn't.
    16' x 32' IG vinyl liner w/ hopper bottom (12,500 gal), Single-speed 1 HP Sta-Rite pump, and 300# Cristal-Flo sand filter, TF-100 test kit

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    Re: New owner: sand filter question

    What if I have sand coming back into the pool from the return lines by the steps? Therefore i have sand in different areas of the pool....
    15,000 Gal pool..sand filter...IG vinyl...Hayward Superpump 2.0 HP..not sure of flow rate...built in mid 1990's

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    y_not's Avatar
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    Re: New owner: sand filter question

    You'd need to inspect your multiport valve & gasket.
    I'm pretty sure I have seen cases where the multiport valve can cause this, but it's actually more going to have to do with your laterals than anything else.
    These keep the sand from going out the return.
    This requires removal of all the sand, to gain access to the bottom of the sand filter and then inspecting the laterals for any damage, holes, etc... Inspect carefully and thoroughly.
    Sometimes it's obvious, sometimes not.


    It's advised to pull them out, one at a time and inspect them as well as any sort of plate that may be underneath.
    Clean it out good, fill with about a foot of water, place a cap over the center pipe, hold it steady and keep it centered as you add the old sand back in, filling it up the rest of the way with water as you keep adding to the fill marks, min/max. May be a good time to just replace it if you want, but not necessary. You may need someone to help you with this.

    As far as tending to the sand goes, I would do the following. This needs to be done 1x season.
    Cleaning & Resettling the Sand Bed
    Then, as long as you keep your chemistry in check, things will be okidoki with the sand.
    Thanks for reading... - Tony
    Da' Pool: Intex 15'x42" 3284gal AGP EasySet (Inflatable Ring) - (Summer 2014: 27' round EW /w 6.5' deep end @ 22,500gal)
    Pump & Cart Mod: 1000gph Cart. 5ft² - 2 nylons, 24/7 OP. Traps bugs/bits, lasts longer/cleans easier = Happier Pool Owner!!
    The Bible for a "Trouble Free Pool" life = PoolSchool, the BBB method a TF100 test kit(Recommend Kits Compared). - Cleaning a Sand Filter
    Water looks like GLASS, if yours doesn't...SLAM IT! Feels nice and never been happier!!! :D

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    Re: New owner: sand filter question

    What if I have sand coming back into the pool from the return lines by the steps?
    1. Make certain it is sand. pick it up and visually identify it.

    2. If it is, check the multi-port gasket for damage and make sure your multiport selector handle is seating properly.

    3. Last, remove sand and inspect laterals.... probably 20 times as hard as the first two steps so don't undertake it lightly.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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