Where Does Oil Slick-like Film Come From? - Page 2 - The Planted Tank Forum
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post #16 of 23 (permalink) Old 04-16-2016, 01:32 AM
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Originally Posted by justin-branam View Post
I noticed this on my new tank. I assumed it was from my sand substrate (Black Diamond blasting sand from Tractor Supply). I noticed it has small metallic specs in it along with the oily looking film. I rinsed the sand many times in a bucket, and it appeared to be the same film. I also noticed the film showed back up when I stirred up the substrate to put in driftwood and plants. I ended up just getting an "Eheim Skim 350" surface skimmer pump. I left it on high for about 20 minutes and the entire surface was clear. Since the high setting also pulled in some bubbles, I reduced it to low (by using a simple shutter style slide switch), and now I have a crystal clear surface with no added micro bubbles in the tank. Best $26.24 I have spent so far!
i have the same skimmer from eheim for about 6 months now with no problems, some thing you can do if you have breeding fish or small shrimp is take some screen mesh and cut it out to fit the intake, i had to do this to mine due to clippings getting stuck in there and running the pump low on water


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post #17 of 23 (permalink) Old 04-17-2016, 01:37 AM
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Has anyone ever noticed their fish eating the surface oil proteins? In my community aquarium they sometimes feed on it.
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post #18 of 23 (permalink) Old 04-20-2016, 08:45 PM
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Quote:
Originally Posted by rebelbuck1993 View Post
i have the same skimmer from eheim for about 6 months now with no problems, some thing you can do if you have breeding fish or small shrimp is take some screen mesh and cut it out to fit the intake, i had to do this to mine due to clippings getting stuck in there and running the pump low on water
I know what you are saying about the plant clippings finding their way in there. Do you have a pic of yours? The screen doesn't interfere with the skimmer being able to pull the skim off the surface?


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post #19 of 23 (permalink) Old 04-21-2016, 12:40 AM
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I know what you are saying about the plant clippings finding their way in there. Do you have a pic of yours? The screen doesn't interfere with the skimmer being able to pull the skim off the surface?
ok i will post a photo tomorrow, left my phone in my work truck


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post #20 of 23 (permalink) Old 04-21-2016, 01:09 PM
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I had biofilm in my aquarium and my friend didn't and I asked him why?
He recommended to get 2-3 black molly, they feed on biofilm. Now water surface is clear.


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post #21 of 23 (permalink) Old 04-25-2016, 01:25 PM
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My SunSun Canister filter came with a surface skimmer that does a great job at removing all the surface scum!
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post #22 of 23 (permalink) Old 04-29-2016, 03:50 AM
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Thanks for this info! I have a Fluval Spec for a while and only notice this gunk on the top of this tank- mystery solved!
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post #23 of 23 (permalink) Old 05-02-2016, 01:18 AM
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I don't know how true this is, but it seems if you add more media to your filter and increase flow through the filter by keeping it clean it can disappear. Maybe it is just anecdotal, but when I keep my filter clean and end up adding a ton of media to the filter it seems to disappear. Also, switching to a lower protein fish food may help. I notice some food produces it more quickly than others.

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