04-26-2007, 07:47 PM
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Another thing you can do if you have failry good lighting is to float duckweed, frogbit, salvina, pennywort, or watersprite on top of the tank. Any of them will soak up lots of the nutrients that the algae is feeding on, and any of them will, in an nutrient rich environment, cut off most of the light to the water column, and starve the algae of that resource too. Course, if you pick duckweed, you'll have a hell of a time getting rid of it when it's time, but any of the others should work just as well - they just cost more.
But 1) do water changes, and 2) Run an airstone at night. I lost a half dozen fish in an algae bloom when I disturbed my substrate too abruptly. Running the air would have helped a lot.