my tank has a twin tube light strip, but it was obviously too bright. I took one bulb out to make it better, but still seemed a little bright. Anyway, I was at the shop today and picked up a Coral Sun actinic 420 bulb, it only gives out light in the blue spectrum. I had it in with the other natural tube and it looked good (blue crayfish never looked better
), but it was too bright IMO. I took out the other bulb and now its all blue (not like a black light). Doesnt seem bright, but it is a 40 watt bulb.
Question is, will this be bad for the fish in the long run, or should I find a lower watt natural bulb to go with it? The P's seem to like the lower intensity of "white" light, and it still lights up the tank well, and there is still other light from the room getting in.
Question is, will this be bad for the fish in the long run, or should I find a lower watt natural bulb to go with it? The P's seem to like the lower intensity of "white" light, and it still lights up the tank well, and there is still other light from the room getting in.