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Thread: Is this dead algae? Not filtering out. What 2 do? PICS

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    Is this dead algae? Not filtering out. What 2 do? PICS

    After shocking the swamp for 2 weeks at FC=34, I'm quite sure the algae is dead. Had to floc to get everything to fall and then I vacuumed to waste. Trouble is, I still have junk falling and collecting but no longer enough water to vacuum to waste again. When I tried vacuuming through filter, water got cloudy, and it was back again the next morning. So my big question is:

    Is my sand filter supposed to catch dead algae? Is there something wrong the filter with it if it doesn't?

    Possible solutions (and I would love opinions as to what YOU would do):

    1. Buy a slimebag. (Would I need one on each of the 3 returns?)
    2. Buy a stick vacuum or robotic cleaner? (do they filter that fine?)
    3. Have water trucked in so that I can vac to waste?
    4. Is there a fine particle filter I can put in the skimmer when I vacuum?

    [attachment=0:1gpafyhb]photo 1-2.JPG[/attachment:1gpafyhb]
    [attachment=1:1gpafyhb]photo 2-1.JPG[/attachment:1gpafyhb]
    Attached Images Attached Images
    18000 gal, inground, vinyl
    sand filter, 3/4 hp pump

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    Re: Is this dead algae? Not filtering out. What 2 do? PICS

    Also wanted to add that I did try adding a little DE to skimmer with no improvement. And here are my #'s in case anyone is interested:

    FC= 5
    CC= 0
    PH= 7.3
    TA= 110
    CYA= 50
    CH= 120
    18000 gal, inground, vinyl
    sand filter, 3/4 hp pump

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    Join Date
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    Re: Is this dead algae? Not filtering out. What 2 do? PICS

    Your sand filter should catch the dead algae. You shouldn't have had to floc to get the dead algae to filter out, either.
    Built in 1957 44,000 gallon in-ground, Wet Edge Primera Stone in Sky Blue, Intelliflo VF Pump, 600 lb. Pentair Triton II TR-100 Sand Filter, CircuPool RG 60 Plus SWG, TF-100 test kit
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    harleysilo's Avatar
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    Re: Is this dead algae? Not filtering out. What 2 do? PICS

    Have you inspected the inside of the sand filter? Perhaps it could use a good cleaning. This my-sand-is-channeled-how-to-fix-it-t7626.html talks about doing it.
    18'x43' Sport Pool
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    Re: Is this dead algae? Not filtering out. What 2 do? PICS

    I have not, but am very suspicious of that too. I was all ready to take it apart this past weekend when I discovered the darned thing is not plumbed with unions and I would have to saw the pipes apart. I'm pretty handy, but not that handy.

    Maybe it's time to call a pool company. I've got a little air leaking into the pump basket too. Ugggh.
    18000 gal, inground, vinyl
    sand filter, 3/4 hp pump

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    Join Date
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    Re: Is this dead algae? Not filtering out. What 2 do? PICS

    Air leaks in my pump basket were always caused by a worn gasket. Can you see the air getting in at the top of the basket?
    22,700 gallon, 18x36 Vinyl IG - Hayward EC65 Perflex DE Filter

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    Re: Is this dead algae? Not filtering out. What 2 do? PICS

    It's pretty hard to tell but it looks like they are coming in from the pipe. I ran the hose over all of the suction side fittings while the pump was running. When the fitting just before the pump basket was covered with water the bubbles were substantially reduced. So I'm guessing that's where my bubble problem is.
    Have checked and lubed the o-ring. Need to rewrap the plugs with teflon tape, but I doubt that's the problem.
    I'm so mad at the dingbat that plumbed this pool with cemented fittings.
    18000 gal, inground, vinyl
    sand filter, 3/4 hp pump

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    Richard320's Avatar
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    Re: Is this dead algae? Not filtering out. What 2 do? PICS

    Quote Originally Posted by awindram
    It's pretty hard to tell but it looks like they are coming in from the pipe. I ran the hose over all of the suction side fittings while the pump was running. When the fitting just before the pump basket was covered with water the bubbles were substantially reduced. So I'm guessing that's where my bubble problem is.
    Have checked and lubed the o-ring. Need to rewrap the plugs with teflon tape, but I doubt that's the problem.
    I'm so mad at the dingbat that plumbed this pool with cemented fittings.
    A hacksaw, some unions, some primer, and some glue, and you're fixed up in a couple hours. Unless you know up front that you're mechanically declined. Then don't bother trying - call a plumber or a handyman. They're probably not as busy as pool guys this time of year.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
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    Re: Is this dead algae? Not filtering out. What 2 do? PICS

    Depending on what your replacing, redoing the piping isnt too bad. I just had my first experience doing that a few weeks ago - though I all I needed to do was replace a ball valve.

    I spent more time worrying about it then it actually took to do!
    22,700 gallon, 18x36 Vinyl IG - Hayward EC65 Perflex DE Filter

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    Re: Is this dead algae? Not filtering out. What 2 do? PICS

    Quote Originally Posted by awindram
    I have not, but am very suspicious of that too. I was all ready to take it apart this past weekend when I discovered the darned thing is not plumbed with unions and I would have to saw the pipes apart. I'm pretty handy, but not that handy.

    Maybe it's time to call a pool company. I've got a little air leaking into the pump basket too. Ugggh.
    Don't call a pool store, they will rip you off and you CAN do this by yourself. Get some pvc cement, and some fittings (ball valves are expensive, but worth every penny.) make sure you seal up your return so no water leaves the pool in a hurry. I am not sure where you are at, but if you post your general location someone is likely to be able to assist. I am in Southern, NH and can plumb so if you are close PM me and we can make arrangements.

    You NEED to know the size of your tubing and whether or not it is solid or flexible. This will make a difference in the fittings/valves you buy. Can you post a pic so we can see and offer advice? At the bottom of the post is an upload section, just make sure to reduce the size of your image or it may not upload. There are free programs out there that will reduce your image size.

    BTW most times all you need to do is put something in front of the return and skimmer as the weight of the water will hold it in place.
    24' round AG 15K gals. DIY solar heater. SolarChlor Max producing free chlorine!!. Pool is crystal clear!! Doing my best to use natural products or processes.

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