Wow. *Pulls out a cute Texas twang* Yall are too funny!

I think I have a headache from all the UVA UVB Spectrum NM or whatever it was.

Either way it was all awesome information.
The tank is still crystal clear. As for painting the tank... The only glass panel of the tank that the light can get to is the main one on the front. If I paint it, I won't see the fish

Think of it this way....
On a typical post, pick any up there ^^^ or even this one.... the blue bar at the top is the wall with the window on it. Now, where it has the baby blue on the left where our avatars are, that is where the window starts - all the baby blue on the left is where the tank is, at a 90 degree angle from the wall with the window. The far right panel of the tank is against the wall, and so is the back. The left panel is facing away from the window. I think I made that more confusing than it had to be - if I did, my apologies
Tin foil on the window?? I better not.... What about a really nice (thick, darkly colored) curtain?? Or maybe if I could go to one of those teacher's supplies stores and buying one of those rolldown thingies they all have on their windows, that block out light completely. Any idea how much one of those might cost?
I've looked into a diatom and I've been considering it for some time. If we can't come up with anything else, or if a diatom would be less expensive than whatever solution we come to, then I'll go with that.
Thanks to all for your help
