Ceramic filter media causing oil slick on surface? HELP! - The Planted Tank Forum
 
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post #1 of 3 (permalink) Old 01-30-2015, 09:31 PM Thread Starter
Algae Grower
 
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Ceramic filter media causing oil slick on surface? HELP!

My tank has been balanced but the ceramic filter media is creating oil slick on the surface of my tank. I've been skimming and cleaning the tank everyday because of this oil slick. Even with the 50 % water change, the next day I get this stuff on the surface. The tank is clean, no dead fishes or shrimps or even fish waste but it seems to be coming from the filter media, which is in the built-in sump filter of the tank. When I did the water change, I rinsed the ceramics in the original tank water but it seems to not help much. How can I clean the media without disturbing the bacteria in the ceramic?

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post #2 of 3 (permalink) Old 01-31-2015, 12:57 AM
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Surface film is a common problem on planted tanks -- it's most likely not the ceramic media, it just kinda happens.

Is the filtration system skimming the surface at all, or is it mostly drawing from below the surface? Emphasize drawing input to the filter from the surface if you have that option in your system.

Also, aim the return so that it gives you some surface ripple, that can help also.
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post #3 of 3 (permalink) Old 01-31-2015, 03:01 AM Thread Starter
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ok, i'll try that. thanks.
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