I had an issue with ocean revive because as I was waiting for the lights to arrive in the mail I purchased a hulking wood canopy for the top of my aquarium. Knowing that I wouldn't be able to properly mount the lights with my new canopy, I contacted them prior to receiving the fixture, and they were combative with me that although the lights were adequate for my tank, that they could refuse a refund because I changed my mind. I ended up purchasing two 36" orbit LEDs that secure to the tank under the canopy perfectly. I just couldn't figure out a way to hang two large square LEDs over my tank and still be able to open the canopy. My experience with them was negative, no big deal I just wouldn't recommend them. You should see the thirty emails I had to go through to get my money back.