I have a 29 gallon planted tank that has a hood and a light fixture that holds one florescent tube 2 feet long. I don’t think this is going to be enough light and I’m not sure if I can get replacement bulb strong enough or if it will even run on the cheap ballast it has. So for now I have 2 25w CFL’s that are mounted on their side. They are in the hood I got from my 10 gallon. I have it sitting in the spot the new light should go it’s about 2 inches above the water and 16 inches above the gravel the light shines through glass that keeps the moisture out. Is 2 25w CFL’s OK for a 29Gallon or should I have more watts. I like the CFL’s for the cost I don’t want to spend allot of money. I have the lights on for 8 hrs a day What are your thoughts on this?