Excellent! I have 125 gallons of salt water and it's great! I used to have 50/50 metal halide pendants. At the expense of the cost of replacement bulbs (for those who don't know, metal halide bulbs need to be replaced annually as they lose spectrum with use), I was able to purchase 2 of these LED strings. Sunrise and sunset are very pleasant qualities. Especially when adding fish to avoid an easy hit. I have live rock in my system and measured the intensity with a light meter at various depths. Even through the glass surface, half-depth lighting is more than adequate for growing zoanthid (food by light) corals. Another big plus is that the lighting can be adjusted almost steplessly to the individual needs of the aquarium (coral species). I bought them over a year ago and they still work. For those of you having trouble, please contact Current USA before slamming the device. Currently exclusively about replacements and fixes. My halogen tags were also Current USA and they've always been very useful.
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