Catmomma you are going to get a lot of options on this one. I should have bought a larger led I bought a cheap 600w one at first then upgraded to a phlizon 600w and will use both for flower. If I could do it again I would have bought a phlizon 1000w Cree cob. But that's me I like phlizon and leds .Just remember that your light is the #1 thing you need to grow great weed. My tent is a 3x3 and I also only use 2 small fans for circulation and an I power 6in fan/ filter for oder and remove the heat.