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Thread: no algae

  1. #1

    no algae

    First let me say any advise would be appreciated.My scrubber has been running for about a month and a half, no algae. My screen is double with both screens being 10 inches wide and 11 inches deep I have four cfl's with actual wattage of 42 watts per bulb. Pump is 500GPH. I have some algae growing on the bottom of my screen that is submerged but none above the sump water line. Plenty of algae on the bottom of the sump and on the motor but none on the screen. I have only four fish right now in a 120 gal corner tank with a return pump of 1350 gph. Some green algae on my rocks and brown starting on my substrate. I guess something needs improving but I don't know what. In advance, Thanks for the help.Ken

  2. #2

    Join Date
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    Re: no algae

    sure your screen is rough enough?
    post more pics, for we look for the problem ;D

  3. #3
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    Re: no algae

    What's the screen made of?

  4. #4

    Re: no algae

    Screen is plastic canvas #5 roughed up with a large hole saw, it came close to shredding. will try to send some pictures. Thanks

  5. #5
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    Re: no algae

    Yes pics.

    A guess: Turn two of the bulbs off.

  6. #6

    Re: no algae

    Would you believe one of the bulbs went out while I was taking pictures? I can't understand all that green algae growing underwater I am going to see if I can scrape some off the bottom and seed my screens. When you think you are doing things right and they don't work it drives me crazy. I will try less light.

  7. #7

    Re: no algae

    [attachment=0:2k0xxuq7]IMGP1050.JPG[/attachment:2k0xxuq7]

  8. #8
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    Re: no algae

    Try the pic again, hopefully larger.

  9. #9

    Re: no algae

    [attachment=1:leiphnx0]IMGP1049-1.JPG[/attachment:leiphnx0]
    Attached Images Attached Images

  10. #10
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    Re: no algae

    Easy fix: Get 3 smaller bulbs (23 or 33 watts), remove the reflectors, and drop the bulbs down to the center of the screens.

    Then start making reflectors for the two outside bulbs:


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