Hi there - maybe someone has a solution for me; apparently my tank size is non-standard

and they are not selling lights for my tank.

It's a 55 gal. and 40" long. Am I going to have to replace the whole tank just so I can buy a PC fixture? Does anyone have any thoughts on a solution for this? I'd love to have PC lights and get a reef setup...but ever since my flourescent fixture burned out, I have been "in the dark" about it, literally!

My budget is $200, and I'd love to get a good lighting for the tank, but I'm a bit confused about how to do the setup, since it's not in the local store and "ready to plug"...PLS HELP!!! I'm a girl and have no idea how to go about calculating all the watts, lumens, and other electrical mumbo-jumbo! Where's the superman who will save me?