oily film on water surface - The Planted Tank Forum
 
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post #1 of 9 (permalink) Old 12-07-2014, 01:08 AM Thread Starter
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oily film on water surface

I have an oily film on the water surface. I skim it off every day and it comes beck the next day. This is a planted tank with co2 injected and pps dosing
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post #2 of 9 (permalink) Old 12-07-2014, 01:10 AM
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Bio film, install a protein skimmer.
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post #3 of 9 (permalink) Old 12-07-2014, 01:13 AM
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Set up a airstone to come on after lights out I just had same issue since doing that it has worked great not an issue anymore

Bump: Mine runs from 9:30 pm at lights out and kicks off at 11:00 am when lights come back on
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post #4 of 9 (permalink) Old 12-07-2014, 01:39 AM
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The film is caused by excess protein in the water. I just leave it be, it's basically harmless.
I usually have enough surface agitation that it prevents the film from getting to thick.
If the film is really bothering you, you can just get a new sheet of printer paper and skim it across the water every once and a while.
Another option, as mentioned above, is using an air stone. I've also seen filter intake attachments that suck in water through a skimmer (instead of being submersed) which would remove the film.

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post #5 of 9 (permalink) Old 12-07-2014, 01:50 AM
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eheim skim 350 best $25 ive ever spent


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post #6 of 9 (permalink) Old 12-07-2014, 02:10 AM
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What causes it ?
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post #7 of 9 (permalink) Old 12-07-2014, 02:35 AM
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Quote:
Originally Posted by Aceman View Post
What causes it ?

Any fish waste and what not that contains protein....

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post #8 of 9 (permalink) Old 12-07-2014, 02:49 AM
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i dont have any after putting a canister filter with a lily pipe on.
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post #9 of 9 (permalink) Old 12-07-2014, 02:50 AM
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it will grow in any stagnant body of water. put a cup of water out for a few days/weeks and it will even grow a protein layer. best way to avoid it is to create a lot of surface agitation


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