Hi Jeff, I use the AH Supply DIY fixtures on two of my aquariums and I like them. With 4X96 watts on a 125 gallon I can imagine algae could be an issue; that is a lot of light! I run about 2 watts per gallon and I seem to be able to grow just about anything. I especially like the 1X96 watt I have on my 45 tall (24" tall) because the reflector seems to direct a lot of the light downward toward the substrate rather than outward toward the walls of the tank. I think Paul just set up a 6' aquarium; you may want to get his input. Hope this helps! Roy _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member