I'm sure the indoor pot heads will eat it up!

Don't plants need a broader spectrum of light waves than just the predominately red?

I start my own tomato plants. I use four foot double lamp fluorescent fixtures that cost me twenty bucks each at the local big box store. They work just fine. Why would I spend $250.00 to buy one of these?

Good luck on that one.

"Why would I spend $250.00 to buy one of these?"

Because in a few 1000 years it's pay for itself!

How many photons does a plant need?

Photons???? Who knows? Who cares? If the average home gardener can start plants with a twenty buck fixture and get very satisfactory results, then that's all s/he is going to buy. We get people on the tomato forum asking if they need those special "wide spectrum grow lamps" and we tell them not to waste their money. Those lamps are about forty bucks a pair, I believe and none of the die-hard growers use them.

Now, some plants actually benefit from the wider spectrum but you can accomplish that to a degree by mixing cool white, daylight and warm white lamps in your cheapo fixtures.

Two hundred and fifty for LED's ???? And if they run so cool, then why the need for a heat sink?

I think this is meant for the pot market.