The pl-1k easily out runs a 400 watt mh in one of my veg/mother plant/papa plant spaces. The dimmer is a must have. Dimming and daisy chaining just add more benefits.

The best light thus far that i have bought for my greenhouse. The light remains cool to the touch and since i lined the inside of my greenhouse with insulation that has a plastic cover, i am not afraid this could cause an accident. Growing some plants...  Read More

I'm no pro and i have several lights with fans (now retired), this is in a different ballpark. Far superior in every way to an earlier light purchased with similar intentions.

Not all diodes are the samsung lm301b. The dimmer function is a joke. Regret not spending the extra $100 for better quality and have the whole board of the samsunglm301b. This light works but this new model is * compared to the old one.