I put 3 in my small tank. 2 are buried and one is half buried. The half buried one has a halo of white fuzz around it-should I take it out? Or is this normal for bulbs? Should I do anything else? Check the buried ones? They've been in there about 2 days, I think.
eta: I also put one in my big tank but it's fully buried.
eta: I also put one in my big tank but it's fully buried.