Good afternoon my friends,

I posted some lighting questions a while back, and now have some follow up questions.

I'm building a 10 gallon PCF tank, planted as natural to Oregon as I can get. My current line of lighting question have to do with brightness.

While shopping around, I've found quite a few options in CFL and LED bulbs within the 6500 Kelvin range, but I'm a little worried about brightness.

Is there any potential harm that can happen to the frogs(vision, etc)?

Can a person diffuse the light without losing the effectiveness of the light for plants?

Am I over thinking this? OR......... .should I try and build some frog sized sunglasses?