I bought a ufo led light any good?

[Bholl]

I purchased an ufo led light for my fish tank but haven't seen very many reviews. Are these good lights? What's the clearance requirements for a tank? I don't want to get it to close, thanks

 

[San Raphael Catfish]

10 inches above the water is the clearance for Taotronics. Hopefully it will say in the instructions that come with you light.