Liquid cooled lights, anyone?

What is everyone's thoughts on these type of reflectors. Seem a little pricey but if they claim to eliminate 90% of heat, sounds worth it.

Liquid cooled reflectors greatly reduce the amount of light that actually reaches your plants. Think about it: You're sticking 2 pieces of glass and 1/2" of water between the bulb and your plants... I'd avoid.

if you would like a constant headache, i recommend liquid cooled lights

Adequate ventilation also removes 90% of heat (just my claim)

A good environment takes care of it. Cool air in, hot air out. If its still hot inside cooler intake temps

I just use a inlane to pull air from my hood and leave the other end of the hood open so the plant stink goes through it into the filter so it all works out, have a mini a/c using one of its vents to push in 65F air through hte bottom and it stays around 70F-75F perfect at night I just shut everything off and let the 2 fans inside keep it at the same temp lol

Thanks for the input guys. I've come to the conclusion it is too much of a headache to even bother. I feel they are a novelty item. I want to say I was really baked when I saw them and ideas started flowing. Not practical at all!