Okay, the bulb I have been using is made by n:vision in, where else, China. It is a 42W, 150W equivalent, soft white bulb, 2600lumens. On the back of the package it says 2700k. It is actually 10-12" above the top of the tank. Nick A _______________________________________________ Aquatic-Plants mailing list Aquatic-Plants at actwin_com http://www.actwin.com/mailman/listinfo/aquatic-plants