I have a 29 gallon. I built a canopy and used a glass cover and put two standard light fixtures mounted in the top of the canopy. I put 13w spiral CFL bulbs rated at 13w each but outputting 800 lumens. It is almost equivilent to a 60watt standard bulb. I have had friends use these to grow indoor plants with great success. I decided to give it a try and after 3 days I can already see the difference in my plants. Course I have more plants than you do. I only spent around $30 dollars total on the light fixtures and bulbs. Not to mention that they will save me $ in the long run on my electric bill. HTH. Oh btw my tank now has a nice yellow hue that really shows off my fish's colors.