Ok, so here's the deal. I'm going to be starting the rebuild of my 125. I have 90% planned out, but i am stumped on 1 item. I want to create a rainbow in the tank. No, i don't want a painted rainbow, but a real rainbow. I was thinking about planting a submersible led low in the tank that would illuminate when the rain system comes in. Any idea on whether or not this will work?