Would an actinic buld on my flowerhorn effect them at all? I have 1 laying around and was thinking about putting it on 1 of my setups
They are used for that but they are actually made to enhance coral growth by simulating deep water lighting. A lot of freshwater people use them as moonlights - I think they are too bright for that. Frontosa owners also use them to enhance the blue on the fish. If you have one, stick it in and see what it looks like. Personally, I don't like them; I think they make the tank look very sterile.fishfreak317;3616462; said:it won't effect them at all. those blue bulbs are to simulate moon effects. most saltwater keepers have these bulbs for their fish. because some fish are more active in the moonlight then in daylight.