I have one live plant and want to switch to cf lighting. I can't find any types other than the run of the mill, everyday cf's. I think they are all 13w. My tank says only (max?) 25w bulbs. Can I just switch to the basic cf's? Will it make any difference? I do hope to find a few low light plants to add but as I'm very rural, I've not run across any yet. Right now the tank has tubular incand's that came with it.