Surface scum - The Planted Tank Forum
 
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post #1 of 7 (permalink) Old 09-28-2014, 10:17 PM Thread Starter
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Surface scum

In my 120 (4') high tech tank I've been having some trouble with surface scum. I don't really feed the tank (only have a few fish that live off what they find), so it's not from that. I originally had a lot of organics in the tank (dead plants, etc.), but even several days after vacuuming out all of these the surface scum remains.

I have an Eheim 2217 spray bar and a Hydor Koralia Nano 240 pump at the surface moving water around. The scum is present everywhere besides the immediate the reach of these two. Any tips to get rid of it?

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post #2 of 7 (permalink) Old 09-28-2014, 10:36 PM
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Increase surface agitation across the entire perimeter. The relatively small footprint of that tank relative to gallons, apparently, doesnt allow for adequate gaseous exchange.


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post #3 of 7 (permalink) Old 09-28-2014, 10:42 PM Thread Starter
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Is there anything that would be small yet strong enough to pump across the length of the surface? The powerhead has led to better surface flow but not a huge increase in agitation.

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post #4 of 7 (permalink) Old 09-28-2014, 10:53 PM
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I ran the same Eheim and a large koralia in my 33 long stream tank and also had that light surface scum. An airstome in the corner was the only thing that fixed it. The koralia just opened up some scum-free spots, but didn't clear the whole surface.
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post #5 of 7 (permalink) Old 09-28-2014, 11:04 PM Thread Starter
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Did you run the airstone at night only?

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post #6 of 7 (permalink) Old 09-28-2014, 11:16 PM
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Get one of these http://www.amazon.com/Aquarium-Surface-Skimmer-canister-power-filters/dp/B00176MUKY/ref=cm_cmu_pg__header
I have one of these on my 75 gallon, it does a great job for clearing up that nasty film and any other bits of plants you may have on the surface. It takes some tinkering at first but, once you figure it out, it's awesome
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post #7 of 7 (permalink) Old 09-28-2014, 11:21 PM Thread Starter
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Hm, I'll have to look into one of those - anything that helps cut down on organics is a plus in my eyes. However, I'm not too sure as to the exact mechanism - does it just bring the organics into the filter to be removed manually?

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