UVB, is it harmful to fish?

[Toadfish]

Well that's my question are UVB rays harmful to fish for extended periods of time? (ie a reptile bulb over fish).

 

[Paul_MTS]

not at all.

it won't give off a very good light though.

a reptile bulb is designed to mimic sunlight as the glass on windows and viv's filter out the useful UV rays to them.

 

[StarOrbs]

There are fish outside in the ocean and in lakes, so I can't imagine it would hurt them hehe.

 

[Opcn]

water is good at filtering and reflecting UV, thats why there was no life on land before plants put up the ozone layer, too much is a bad thing but I doubt you will get the much. Just be careful for yourself because water really does reflect alot of UV, ever been out on a boat with no sun screen evewn up here in AK you get a tan really fast by the water.