rabbut
I don't bite, all that often...
I tend to leave lights off for 1 hour and feed the following day. A lot of this is a jugement call. If they are stressed, leave things longer 




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They can be signs of internal bacteria. It's not a good idea if it was one of the others though, as Internal Bacteria products that work tend to knock immature filters for six.... Dosing them at this stage needs to be done carefully. Slight overdoses could undo your hard word 