Thanks everyone for the compliments. I have a Nova Extreme ballast running 2 54 watt T5 bulbs. I'm going to try out a 6500 bulb and see what results I get. I really like the way the actinics bring out the blue in the Trets, so I'd prefer not tweak it too much, but if I can get a look I like, and it benefits the plants, great. I had been running CO2, which helped greatly, but the PH dropped enough I was doing water changes every 3 days for awhile. The rapid changes in PH are a big no-no for Tangs, so I have cut it out. Hopefully the Val continues to thrive.
