Hi, Nicole ~
Glad your fishes are doing well in school! Love your blog.
The colors show up well on video, and they give one the capability to assign a different colored bridge to individual fish - very helpful in my two-fish tanks. I mount the lights on stands constructed of a dowel and a wood base, so that I don't have to hold the light the whole time I'm training.
I have always had glass tanks. There's almost no visual distortion, and I find it helpful to have the entire tank top open. Acrylic tanks always seem to have most of the top closed off, leaving only a small window for putting in training equipment, feeding wand, etc. Glass tanks are way cheaper, too. They are heavy, though!