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Old 08-12-2004, 08:19 PM   #1
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Bright green algae on top of sand

Here's the set up:

10g tank with two incandescent slots. I put a regular incandescent on one side and a compact florescent on the other. The problem I'm starting to have is that the florescent is causing alot of algae to grow. What's your toughts (besides turning the florescent off) on what I should do.


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Old 08-12-2004, 11:05 PM   #2
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how many watts is the flourescent?

if its 10 watts or so, I'd actually try to get a second one so you'd have all flourescent lighting. algae is pretty normal in a planted tank... try limiting the nutrients available (less fish food, less ferts, more frequent water changes. As you get the nutrients/light combo balanced, you may prefer the stronger light (flourescent) in the long run.

That'll do pig, that'll do
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Old 08-13-2004, 08:44 AM   #3
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This algae on the sand, is it slimy looking and comes off in sheets? If so, it might be cyanobacteria, which would be handled differently.
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Old 08-13-2004, 10:48 AM   #4
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exactly my thoughts TG - bright green algae on the sand sounds very much like cyanobacteria.

If you remove the algae by hand, smell it. does it have a very strong, green smell...sorta like cut grass only more intense?
if it has a strong smell, it's cyano. if it's cyano, i suggest treating with Maracyn (an antibiotic)...use a half dose, every day, for a week.
Former advisor and planted tank geek...life's moved on though.
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algae, green algae, sand

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