I was at my LFS a few days ago and saw a beautiful tank. It had Deep Blue lighting. It was super clean . and the coral were beautiful. I asked about it and was told as I should have known . Algae growth was nothing , And was told coral are used to fighting blue light ( deep depth ), and Par was achievable. Comments please especially sps levels. I assume 150 easily done. ???? I already know light penetration for photography ends about 40 feet. I did not go deeper as it was usually a drop off to over 100 feet
