06-24-2008, 03:37 PM
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My tank has all cannister filters and as little surface turbulance as possible, virtually none, to keep the CO2 that it will have in it soon from dissolving out. My question is, how do y'all that similarly keep the surface movement at a minimum, keep the surface from getting scummy? Is there anything I can do to skim the surface without hurting my CO2 levels? Right now there is nothing in the tank, but air bubbles pop very slowly if at all and just hang under the surface in clumps, and there are blobs of sort of opaque white stuff on there as well. Is this to be expected? The tank is setup with plant lighting and has been for a few days now, but has no plants or fish in it yet, is this scummyness on my surface the beginnings of algal growth that will clear up once I get some plants and an algae squad established or do I need to find another solution?