-Nemo-
Build-A-Reef
Usually it's good to add in order of temperaments... So firefish first, then clownfish and then wrasse would be a good order. Looking good so far 

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I always aim for a head of foam protruding from the inlet of the collection, like you get on kids bubble bath. That gradually gets pushed over the edge, collects in teh cup and then breaks down into dirty water. Anything more than that and I find I'm just wasting water and forever emptying the darn cup lol.