Which one? They have fancy ones with timers and moonlights but also have basic 1 switch models. I have a 36" twin t5HO(saltwater version with 10k & actinic) with no bells or whistles on my 40g breeder p. saulosi tank and really like it. I've only had it 3 months so it's a little early to declare them great but the housing is solid and well constructed. My lfs has an amazing planted 72g bowfront with the higher end model and I checked it out for my planted tank and it seems great, but a little pricey for me to just buy when my current fixture works. At the end of the day I will definitely look into them when one of my other fixtures poop out on me.