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Old 11-18-2005, 06:57 PM   #11
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Ahhh, one of the biggest benefits of having an overflow into a sump. However, the only real good thing you could look at is that you do at least have an indication that you have an abundance of DOC's. All the above choices will work, but some require extra equipment being visible in the tank.

What I would do first is remove the DOC's causing the problem. A large water change of 30-50% would probably do wonders in addition to running carbon if you have the ability (HOB/Canister filter, etc.). It is most important to make sure the changewater is properly mixed, aerated, and buffered to the tank parameters (PH, salinity, temp).

The accumulating DOC's on the surface may actually be a sign of more impending problems down the road from lack of export.
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Old 11-18-2005, 09:15 PM   #12
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Quote:
Originally Posted by greenmaji
mp3z24.. the fluval surfase skimmer adjusts for water height by floating the surfase extracting tube up and down the black rod correct?
yes, the floating slotted cup will sit at the water level and skim off the surface. it will follow the water level changes.

like i said earlier, you do have to get your settings right with that black stick. basically, the body has a threaded end and a set of slots at the bottom. the black stick is screwed up and down to adjust the size of the openings at the bottom. if you set the openings too large at the bottom, then the pump will pull more water from the bottom, and wont skim very well. if you set the openings at the bottom too small, then the suction of the pump will be pulling too much from the surface and the cup will surge under water and then bounce back to the surface... it is quite annoying when it happens, but it just takes a little adjusting to get it working well. i have mine set to skim about 1/8 inch below the surface. your settings may vary depending on what the feed is going to.

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Old 11-20-2005, 04:26 AM   #13
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I used to have that problem even with the powerhead blowing towards the surface. There is agitation but the oily film exists. What I did temporarily is I added coarse bubbles in there (airline tube without airstones on the other end, connected to a two-outlet air pump). Suddenly, the the film is no more.

any downside with bubbling the tank? It's really mild and coarse bubbles, though.

Your inputs will be appreciated. Thanks.
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Old 11-20-2005, 09:31 PM   #14
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The only downside of the bubbler is that the bulbs popping on the surface will splash and cause salt creep buildup somewhere.
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Old 11-21-2005, 01:20 AM   #15
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I have two maxi-jet 1200 powerheads and an Aqua C remora pro skimmer. The slime went away. The two powerheads are about 3-4 inches from the surface, pointing up diagonally towards the surface. That's what works for me so far.
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Old 11-23-2005, 09:15 AM   #16
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The big bubbles will pop at top and you will have salt creep every where
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