Blasting Sand created Oil Slick Help! - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 03-11-2012, 07:49 PM Thread Starter
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Blasting Sand created Oil Slick Help!

So a couple weeks ago I switched my pea gravel to black blasting sand. I had thought I washed the sand out fairly well, but I was wrong. When I carefully added the sand, there was an apparent oil slick formed on the surface. So I siphoned off the surface layer to remove all the oil. O day later, the oil slick is back. This has gone on for about 2 weeks maybe of the back and forth between siphoning and and the oil slick. I don't know where it keeps coming from!! Is this just a game I will have to keep up until it finally subsides? The good news is, none of my fish seems to be effected by it, however I only had hardy fish in there (red eye tetras and peppered corys). My biggest fear is not having this issue solved by the time I get angels or less hardy fish and having it effect them. Attached is a photo. Any help would be grateful
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post #2 of 6 (permalink) Old 03-11-2012, 09:27 PM
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are you sure it's from the substrate? because some of the fish food might do it as well, which is fine.

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post #3 of 6 (permalink) Old 03-11-2012, 09:36 PM
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I dont think its from the sand since i have that as well. It occurs when there isnt a lot of surface movement to break up the protein.
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post #4 of 6 (permalink) Old 03-11-2012, 09:40 PM
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damn thats a lot
after a month the oil in my tank was gone.
thats after i wash the crack out of it.
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post #5 of 6 (permalink) Old 03-11-2012, 09:45 PM
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It's more than likely the same thing that you see on many ponds during the summer. It's usually nothing more than proteins that are breaking down causing the "oily" coating.

If your worried, create some more surface agitation. Small waves do wonders for this. Another trick is using a paper towel and laying it on the surface for a second. It will take care of it temporarily.


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post #6 of 6 (permalink) Old 03-11-2012, 10:14 PM Thread Starter
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Hmm I have a Fluval fx5 for my 55 gallon, it is cranked down a little so I may crank it all the way up and aim both heads for the surface. I never had happen in my other tanks so my thought was it was the sand considering I saw that direct impact from when I put it in at first. It is weird, whenever a drop of water or something "breaks up" the slick it acs much like oil and separates fast from that one spot. I wonder if it is that oil I am thinking of or protein which I have never dealt with before.
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