Thanks for the concern. 1st. Theres snout nose kids around the tank. 2nd. I have a welders black glass on top and I have the uv on a timer . On off cycle .I wasn't worried about your fish, I was worried about you and your family members.....but what do I know I bought an expensive/overpriced unit that was designed not to give me skin cancer and burn my retinas.
To each his own.