what is the opinion for bulbs or kelvin?
golfish Active Member Jul 13, 2004 #2 the ballast has a little to do with it. Are you going to be running any other lights with the MH's
reefnut Active Member Jul 13, 2004 #4 What kind of ballast is it?? Personally if your putting 400s on a 55g I would go with 20,000k bulbs. It would be nice and blue and should have plenty PAR for a 55g.
What kind of ballast is it?? Personally if your putting 400s on a 55g I would go with 20,000k bulbs. It would be nice and blue and should have plenty PAR for a 55g.
I would go with 20,000k bulbs. It would be nice and blue and should have plenty PAR for a 55g.