Yeah, it is a lump. I think it's the lack of far red in the spectrum that keeps the plants low. I like that.
I was going to lift the photo up higher, but that would mean extending the pump line on that pot, I think the pump will push the nutes via the easier route (the other 3 pots), Id be doubling the head pressure on that one emitter.
The true wattage of the mars is 700 odd.
I ran my Auto x grow with 400w led and 500w of side cfl is a simular sized tent. So hopefully, with a bit of a ventilation upgrade, it won't go too wrong!