I got my 24inch 250watt and of course it sucks. The bulb they sent isn't even a 10k, it's more like a 7500k. Way to yellow. Oh well, I bought a Hamilton 14k and guess what it doesn't work, because of the cheap ballasts they use, you also might want to check the PC's when you get them because aqautraders uess a bulb that is shorter than any other out there and puts out less light. Tried to swap out some PC's from Hellolights and they wouldn't fit because name brand bulbs are longer.
Called their "tech support", they couldn't tell me what kind of bulbs they sold with the system, if they were pulse or probe start. The bulb doesn't even have a name on it. Cheap knock off.
They only nice thing about the entire system is the housing. It's a lot smaller than the old ones they used to sell. But it does you no good when it doesn't work. I'm taking mine back.
Aquatraders is low priced because they sell knock off equipment that's crap built in China.