I have a low tech planted tank containing some java ferns, anubius and crypts. The lighting is very low, only 17 watts t8 on this 38 gallon tank. While I enjoy not having to deal with algae or trimming the plants are not as green as they could be. Actually they are turning brown. So I'm thinking of upgrading my lighting. Nothing drastic though, as I only want to maintain healthy plant life and not after vigerous growth of my low light plant choices. I'm looking at a t5 that is 24" and a single bulb for 24 watts. Although my tank is 36" is this a factor since it's not going along the entire length of the tank? The 36" version would give me more light than I'm after. I'm looking at t5's versus say a higher watt t8 because of efficiency and a t8 would require a double strip and wouldn't fit onto my integrated hood/cover. Would this be a good choice?