I just picked up 2 used 175 halide units at a great price. What bulb is best for a freshwater planted tank, 4k or 5.5k? Would the same bulb also be appropriate for a saltwater plant tank? CS _______________________________________________ Aquatic-Plants mailing list Aquatic-Plants at actwin_com http://www.actwin.com/mailman/listinfo.cgi/aquatic-plants