Alright, well you're on your way! The nitrite and stuff should sort itself out.
I don't see a problem with your sump, so I can't really say why your skimmer acts wierd. Do you give the collection cup and stuff a chance to get a little dirty? They skim better once they've been running for a while...
Well, the algae is grape caulerpa. Excellent for export, I would keep a light on over it 24/7 and harvest regularly. When you harvest, remove whole chunks. As far as the thermos thing, I can't really say... probably an internal power filter of some sort. Remove any media that is in it, and keep it clean like the canister filter.
Hmm, perhaps you should get another heater for the tank? Most people recommend around 3-5 watts per gallon, depending on how cold the room is that the tank is in.
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Calvin
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Planning a 29 gallon mixed reef...
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