reefer
Well-known member
I have a great 400W Ballast and 400W Bulb over my 50 Gal tank. It's way overkill. Is it ok to use a 250W bulb with a 400W Ballast?
I hate to trade off the ballast for a smaller one as I intend to someday go to a larger tank.
I hate to trade off the ballast for a smaller one as I intend to someday go to a larger tank.