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Thread: Algae re-entering pool while vaccuming

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    Algae re-entering pool while vaccuming

    Ok so I got my Intex 2650 sand filter in and running and decided to vaccum some today. Well when I hit the algae on the bottom at the middle of the pool it seemed to just recirculate into the pool. Is there a way to stop this from happening?>
    Intex 24' x 52" Ultra Frame
    Intex 2650 gph sand filter/pump
    Intex Salt Water Generator
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    Mod Squad Bama Rambler's Avatar
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    Re: Algae re-entering pool while vaccuming

    Are you sure you have the valve set to filter and not recirc?
    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
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    Re: Algae re-entering pool while vaccuming

    Yes I am sure I double checked that lol. Would a filter sock help?
    Intex 24' x 52" Ultra Frame
    Intex 2650 gph sand filter/pump
    Intex Salt Water Generator
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    Mod Squad Bama Rambler's Avatar
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    Re: Algae re-entering pool while vaccuming

    It would help but you definitely have a problem you'll need to fix sooner or later. Are you shocking properly?
    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
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    Re: Algae re-entering pool while vaccuming

    Im in the process of cleaning up a swamp from over the winter and was shocking wit bleach. Everything was a nice blue color til I tried vacuuming it up. It sucked through the vac but came back through the return.
    Intex 24' x 52" Ultra Frame
    Intex 2650 gph sand filter/pump
    Intex Salt Water Generator
    All PVC Plumbed

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    Mod Squad Bama Rambler's Avatar
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    Re: Algae re-entering pool while vaccuming

    You need to find out why it's doing that before you can make much progress.
    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
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    Re: Algae re-entering pool while vaccuming

    Well when I tried to skim some off the top with my skimmer net i noticed that the algae would just pretty much disentegrate and pass theough the net. I figure thats what is happening when it passes through the sand filter
    Intex 24' x 52" Ultra Frame
    Intex 2650 gph sand filter/pump
    Intex Salt Water Generator
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    Butterfly's Avatar
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    Re: Algae re-entering pool while vaccuming

    Sounds like the sand is channelled - but you just added this filter, right?

    You might wanna give some details on how much sand you put in the filter. And, did you rinse it before starting to filter?

    Does any sand return to the pool along with the algae?
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    Re: Algae re-entering pool while vaccuming

    I just installed to filter thursday. I added 100 lbs of pool filter sand as per the manual. I backwashed then rinsed as the manual said before starting. I haven't noticed any sand going into tge pool.
    Intex 24' x 52" Ultra Frame
    Intex 2650 gph sand filter/pump
    Intex Salt Water Generator
    All PVC Plumbed

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    Re: Algae re-entering pool while vaccuming

    Have you backwashed since the first time?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    Re: Algae re-entering pool while vaccuming

    Yes I have the next day the pressure was up and the water was at a trickle at th return so I backwashed then rinsed then restarted but I noticed the pressure hasn't climbed a whole lot since then. I think I'm gonna take the 6 way off and look at the sand see if I can see any channeling
    Intex 24' x 52" Ultra Frame
    Intex 2650 gph sand filter/pump
    Intex Salt Water Generator
    All PVC Plumbed

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    Re: Algae re-entering pool while vaccuming

    Also I didn't really mention it but it returns in a reen cloud not as whole algae particles. I removed the 6 way and did whatg they suggest to the sand when you suspect channeling so I'm gonna let it run a bit and try it out again and see what I get.
    Intex 24' x 52" Ultra Frame
    Intex 2650 gph sand filter/pump
    Intex Salt Water Generator
    All PVC Plumbed

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    Mod Squad Bama Rambler's Avatar
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    Re: Algae re-entering pool while vaccuming

    I highly doubt it's channeling since it's only been used a week. It may be the multiport leaking by.
    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: Algae re-entering pool while vaccuming

    Thats what I was thinking Bama but figured it wouldn't hurt to try it out
    Intex 24' x 52" Ultra Frame
    Intex 2650 gph sand filter/pump
    Intex Salt Water Generator
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    Richard320's Avatar
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    Re: Algae re-entering pool while vaccuming

    Quote Originally Posted by cajuncowboy
    Thats what I was thinking Bama but figured it wouldn't hurt to try it out
    Well???? What's the verdict? Enquiring minds want to know.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
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    Re: Algae re-entering pool while vaccuming

    Well I pulled the valve shoved a hose in and out the sand til the water cam out clear. then leveled the sand backwashed, rinse and restarted. I let it filter for a while then re-vacuumed. There wasn't as much coming through but still got a green fog coming back into the pool. How would I go about checking the 6 way for problems?
    Intex 24' x 52" Ultra Frame
    Intex 2650 gph sand filter/pump
    Intex Salt Water Generator
    All PVC Plumbed

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    Mod Squad Bama Rambler's Avatar
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    Re: Algae re-entering pool while vaccuming

    About the only way to check it out is to pull it apart.
    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: Algae re-entering pool while vaccuming

    When vacuuming very fine debris, it is not uncommon for a cloud of micro-particles to get through the sand. Sand can only filter down to a certain level, and the rest will pass right through. If the flow rate is excessive for the filter, then the amount of unfiltered material will be even greater and more noticeable. Mustard algae is especially difficult to filter with a sand filter.

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    Butterfly's Avatar
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    Re: Algae re-entering pool while vaccuming

    Hey cowboy, now would be a good time to add your pool and equipment specs to your sig.

    Go to User Control Panel (upper left below TFP logo) select Profile, then Edit Sig.

    Also add your location (city/state) to your profile.

    This will help us troubleshoot
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

    ~ One should not use a sledge hammer to swat a mosquito. ~

    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  20. Back To Top    #20

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    Re: Algae re-entering pool while vaccuming

    That is what I was leaning towards James. Just thinking the particles are too small for the sand
    Intex 24' x 52" Ultra Frame
    Intex 2650 gph sand filter/pump
    Intex Salt Water Generator
    All PVC Plumbed

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