90 Watt UFO LED

How many plants do you guys think one 90 Watt UFO LED light would be able to grow? They say it covers between 8-20sq ft, every site says something different. I am going to say it covers about 9sq ft, so how many plants would one be able to put in a 3ftx3ft area, and successfully cultivate all the plants with a decent yield?
Thank Ya:thumbsup:

check out whiskey tangos grows, he grew plants to maturity with 100w procyn or w/e there called led's

Dang! I checked that out and it is very interesting how effective they worked, I didn't pay nearly as much as he did on my lights though, they really do pay for them selfs in the long run though. :)