Quote Originally Posted by SteveSmith
Can you tell me why it isn't any good?
this time...in english.
That panel uses 28 watts.

A good led driver functions at perhaps 85% efficiency. Assuming that panel uses a good driver ( :lol5: ) it's delivering a maximum of ~24 watts to the leds themselves.

Expect performance NO BETTER THAN 50 watts of HPS, and that's if everything else is well-engineered. So, Glowpanel "45" is an appropriate name. It might match about 45 watt of CFL's, about $6 at the discount store.

With a 400 watt HPS running, your plants won't even notice if that panel's on. Possibly of some use for side-lighting or seedling-starting, but that's about it.

Top quality components run ~ $2/watt for the emitters plus ~ $1/watt for drivers; a top-shelf 30-watt led light should cost ~$90. Maybe a tad more if you use a nice heatsink and/or a cooling fan (that panel has neither.)

Replace a 250 with that panel? No way. That claim, on their website, is just plain silly.