surface disturbance = bad thing -- but what about buildup? - The Planted Tank Forum
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post #1 of 4 (permalink) Old 03-19-2006, 08:53 PM Thread Starter
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surface disturbance = bad thing -- but what about buildup?

i have my filtration setup so i have absolutly no surface disturbance, the water circulates in a nice circular motion and i can verify that it is circuluating in that way by the buildup of bubbles at the surface!

I also tend to see sometimes what looks like a small film of oil, i generally try to remove this with a small flat container but it takes time to remove, i never had this problem with the HOB filter.

Is this film and bubbles at the surface a good, bad, indifferent thing?
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post #2 of 4 (permalink) Old 03-19-2006, 09:20 PM
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You should have some surface turbulance, but not alot.

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post #3 of 4 (permalink) Old 03-19-2006, 09:29 PM
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you can use either a skimmer paper towels and "pat" the surface..
the scum is a buildup of protein in the water...saltwater tanks use protein skimmers to remove this from sw tanks (along with organic matter) not sure , but the scum might reduce oxygen absorption into the water

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post #4 of 4 (permalink) Old 03-19-2006, 09:32 PM
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I find that when everything is growing well and I'm not overfeeding my fish that I get no surface film. When I don't change my water every week or feed my fish too much then the film appears. I don't know that it is bad in and of itself but it may be an indicator of something you don't want.


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