Hi Jenko I'm running the same sort of lights, you don't see it often. I've run a couple of grows with them and I'm a big advocate of them for the budget grower. I would suggest you get more than three though. I have eight 20W in my 75cm*75cm tent. I used aliexpress, 2 x e27 double head flexible sockets and 4 x e27 to 2e27 splitters. Four 20W warm white bulbs and four 20W cool white, plus some spares (I got eight of each). All very cheap and low delivery costs, but can take a few weeks. If like me you can't afford a proper grow light, this lot is under 50 bucks all in. Good luck growing dude