How much does that led grow light cost?
Costs less direct from the manufacturer in China.

The only electrical specifications given on the importer's website contradict Ohm's law. (You cannot get 180 watts OUT of a device that only draws 150 watts going in.) This seller refuses to discuss any further specifications, such as emitter wavelengths, driver types/ efficiencies, etc. :wtf:

Save some coin and order direct, if this type of "equipment" will meet your needs. There are still lotsa obsolete leds in oddball wavelengths that Chinese industrialists would love to unload. At least they'll tell you what color emitters you're buying (although that data is frequently unreliable).