jjgomillion
Member
I would like to upgrade my lighting so that I can keep a wider variety of things like corals. What should I get? My tank has the original lighting on it. the bulb is 23 1/2" long and the fixture is apx 28 1/2" long. Can I just change to bulb? Or do I need to add a whole new fixture? I really dont understand what VHO, ballast, and all that is. So if you could spell it out for me i'd appreciate it!!!