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Old 11-05-2003, 09:26 PM   #1
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purple...black substrate

What the heck are those black almost purple blotchs on my substrate ????
It looks like mold. Is it good bad or what.........
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Old 11-05-2003, 10:04 PM   #2
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sounds like cyanobacteria aka red slime algae. It is not good. But i really am not sure if it is bad either just ugly lol

some of the things i have heard to get rid of it are increased water flow over it and using RO water for topoffs and water changes.
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Old 11-07-2003, 11:32 PM   #3
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just got a R/O + DI filter hope to put it to work soon
Thanks
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