Waste of money... By David on 2/8/14David wouldn't recommend this product to a friendI have the first gen lights that I will say up front was one of the best things I could have bought for my reef... I have two on my 75 gal reef and love them. I decided to upgrade the lens on them thinking I will get more bang for the buck, but to tell you the truth, and its my opinion only, I don't see any difference in the lighting whatsoever. I have not seen better growth of corals on a stronger lighting effect brightness.... nothing! I just feel like I wasted $60 dollars on plastic lenses and really can't justify them. I would not recommend buying these upgraded lenses.. Don't waste your money.