lucascoatney
Member
I am buying a 72 inch light fixture for my reef tank im starting up and I had a few questions. First off my tank is 220 gallons and it is approximatley 23 inches deep. Now should I get 400 watt or 250? i have read different things telling me different advice going in both ways. Next should there be 2 or 3 MH bulbs across the 72 inch fixture. Most of the 250 have 3 across but many of the 400's i have seen only have 2 across it. What is yalls advice on this. any info is appreciated. thank you.