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Thread: New to sand filter - tried everything I know

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    New to sand filter - tried everything I know

    My skimmer doesn't seem to be pulling in with much strength. There is flow back into the pool so I know it's working some, but not like I've seen it capable of doing.
    When I switch the lever to recirculate it pulls really strong.
    I've checked all the hoses, burped the air out, backwashed the sand and rinsed to level.
    note* when I backwashed the sand the water wasn't dirty

    Not sure what else to do...
    Terre Haute, IN
    18 X 48 Intex Ultra-Frame AG
    Intex Saltwater Generator/sand filtration system

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    JasonLion's Avatar
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    Re: New to sand filter - tried everything I know

    How long did you let it backwash? You should give it say three minutes at a minimum, longer if the water is flowing dirty at that point.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    New to sand filter - tried everything I know

    Ok. I let it go a bit but sure it wasn't quite 3 minutes. I'll try that. Thnx!
    Terre Haute, IN
    18 X 48 Intex Ultra-Frame AG
    Intex Saltwater Generator/sand filtration system

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    Re: New to sand filter - tried everything I know

    Backwash for 3 minutes like JasonLion said, then you want to rinse for 1 min.

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    New to sand filter - tried everything I know

    Ok I ran the backwash for 3 whole minutes.
    Then I ran the rinse cycle for 1 minute.

    It doesn't seem much different - maybe a little. When the pump is on recirculate mode it sucks the water in through the skimmer forcefully and pulls the skimmer basket down. When I run it on filter mode it's just a little eddy around the skimmer- although there is strong flow from the outlet that returns the water to the pool.

    Any ideas?

    Also - need to ask:
    Do u cover the drain cap for the rinse cycle or leave it off until filter mode?

    I also noticed that the backwash mode didn't gush water like usual this time. The rinse mode did - but the backwash mode just poured out. Is that bad?
    Terre Haute, IN
    18 X 48 Intex Ultra-Frame AG
    Intex Saltwater Generator/sand filtration system

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    New to sand filter - tried everything I know

    The manual that comes with the sand pump isn't very thorough about some things.
    Terre Haute, IN
    18 X 48 Intex Ultra-Frame AG
    Intex Saltwater Generator/sand filtration system

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    Re: New to sand filter - tried everything I know

    What is the psi gauge showing when you run in filter mode?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    New to sand filter - tried everything I know

    A couple lines up from the zero - middle of the green zone
    Terre Haute, IN
    18 X 48 Intex Ultra-Frame AG
    Intex Saltwater Generator/sand filtration system

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    Re: New to sand filter - tried everything I know

    Take the multi valve off of the filter and check to make sure there is nothing in the center pipe.

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    Re: New to sand filter - tried everything I know

    Hmmm, well there is no clue there. It sounds like the resistance within the filter is high (normally, that means it's doing it's job, catching dirt) but, in your case, there seems to be no dirt.

    Have you ever taken the top off the filter to look inside and see what it looks like? should be a fairly clean layer of loose sand (there actually may be quite a bit of junk on top of the sand bed that you can clean out but I don't think that's enough to account for the symptoms you describe)
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    New to sand filter - tried everything I know

    Ok. I'll check inside the filter for those things tomorrow.
    Terre Haute, IN
    18 X 48 Intex Ultra-Frame AG
    Intex Saltwater Generator/sand filtration system

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    New to sand filter - tried everything I know

    I opened the top of the filter while my brother was here setting it up for me and it caused quite a commotion. Evidently my attempt at helping dislodged that pole in the center of the sand and he wasn't sure how he was gonna get it back in there correctly without having to empty it. They must've figured out something - I didn't stick around to find out after that! ha!
    (needless to say I'm a little leery of opening that thing!) *yikes*
    Terre Haute, IN
    18 X 48 Intex Ultra-Frame AG
    Intex Saltwater Generator/sand filtration system

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    Mod Squad Bama Rambler's Avatar
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    Re: New to sand filter - tried everything I know

    We had a similar situation a little while ago on here. That wound up being the laterals were clogged and wouldn't backwash clean. It wasn't the same filter but it could be a problem. Yours has a disc instead of laterals, but the operation is the same. I'd inspect the disc real close to see if the slits are clogged.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    New to sand filter - tried everything I know

    Got it working. I think the in and out hoses may have been switched. Either way it's going strong now.

    Other end of the spectrum tho - now the psi is in the yellow zone even tho I've backwashed and rinsed 3 times. It's just barely tho - so maybe it's ok??
    Terre Haute, IN
    18 X 48 Intex Ultra-Frame AG
    Intex Saltwater Generator/sand filtration system

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    Re: New to sand filter - tried everything I know

    so maybe it's ok??
    Almost surely. For your birthday (or sooner) treat yourself to a gauge with real numbers on it.........0 - 30 psi or 0 - 50 psi. A good, working gauge is very important when managing your pool.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Mod Squad Bama Rambler's Avatar
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    Re: New to sand filter - tried everything I know

    Several people have commented about the pressure running in the edge of the yellow zone normally. I'm like the other Dave, I'd have to have a gauge with real numbers.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: New to sand filter - tried everything I know

    lol ok! ok!
    it says it's under 10 - couldn't find in the manual where it says what the normal range is - just says if it's in the yellow to backwash - only so many times you can do that! lol

    thanks guys!
    Terre Haute, IN
    18 X 48 Intex Ultra-Frame AG
    Intex Saltwater Generator/sand filtration system

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    Mod Squad Bama Rambler's Avatar
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    Re: New to sand filter - tried everything I know

    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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