My light fixture after about a year decdied to die on me recently so I ordered a new one. I use duo fixtures ao that i can have a uvb and a plant growth light. So my fixture came in today and this fixture comes with like a plastic slide in screen that would be pretty cool to have so that water is blocked frok hitting the bulbs 100%. So my question is, can I use that plastic screen or will it block the UVB light? I want to use it but obvs if I can't then I won't.