Floating Particles and Oily residue. - The Planted Tank Forum
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post #1 of 7 (permalink) Old 03-04-2012, 12:48 PM Thread Starter
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Floating Particles and Oily residue.

I started a Fluval 7.9 gallon about a week ago. I have a piece of mopani wood and some stones in addition to a few plants (and Fluval Substrate that was included).

The past few days I noticed floating particles and what looks to be a light oil slick on the surface.

The only additive thus far is Nutrafin Plant Grow which was included in the kit.

The wood and stones were both soaked for days prior to placing them in the tank. I also pointed the filter upward to agitate the surface in case that would help.

Any ideas?

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post #2 of 7 (permalink) Old 03-04-2012, 03:10 PM
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That often can help completely rid the surface of Al those oils. Everybody gets that surface Slick if they don't agitate the surface somehow.

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post #3 of 7 (permalink) Old 03-04-2012, 04:19 PM
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Thats normal, to really get rid of it you have to have water breaking the surface or some kind of filter skimmer thing

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post #4 of 7 (permalink) Old 03-04-2012, 04:23 PM
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doesnt the filter on the fluval kit come with a little spraybar? If so, position it just above the water surface and it should fix the problem
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post #5 of 7 (permalink) Old 03-04-2012, 04:27 PM
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it wont cause any harm just unsighly use an air stone or high agitation from filter

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post #6 of 7 (permalink) Old 03-04-2012, 04:41 PM
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If it builds up too much it can reduce oxygen levels in the water by not letting it into the water ect ect. I had this issue yesterday actually, I came in to find harlequin rasboras and apistos in a tank at the top of the water. Everything changed when I agitated the water to get oxygen into it.
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post #7 of 7 (permalink) Old 03-05-2012, 03:58 AM
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I've had it before, and it seems like it's not uncommon. I've heard it could be everything from a bacterial film, proteins, oils, etc. I've no clue as to what it actually is (probably a bit of all of the above)

For the short term, you can use a papertowel draped along the surface to absorb it, or use a cup or something similar during water changes (or whenever you notice it) to draw off the top layer of water (and film with it).

Longer term, either see about agitating the water (spray bar, air stone, etc.), or using some sort of overflow/skimmer for the filter uptake.

And, yeah, as said above, a bit probably won't matter, but if it gets excessive, it could cut down on gas exchange.
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