So I checked into those lights and they look pretty sweet. Very very small at 4.5 inch diameter. Says it has a 2x2 foot flower print. Almost want to try one myself over one plant start to finish and see how it does GPW wise. I noticed on their site they have a sweet 360 degree spinning thing that holds up to 6 of these lights and spins! Creating a very even spread im sure! If one works good than 4 of them in the spiny thing in a 4x4 would probably b crazy. Very interested in these lights now. Wish it was full spectrum though and not one or the other. I guess with 6 on the spinner I could have 4 on bloom and 2 on veg towards the end of stretch and then full flower with only 1 veg while in full flower. Word b hard to do perpetual in one tent like I'm currently doing but I could really pack a tent and get crazy GPW if those things work well. They say 4 equals a 1000w hps