Tubbzy

@Tubbzy, 250W closest 10″ (25cm) sunlight 12″ (30cm) furthest 14″ (35cm) 10 inches is gonna be rough, I keep a dimable 600w MH set at 300w at 14-15" during veg and cheat higher when in doubt in flower. I see a lot of folks throwing far too much light on the subject IMO :) If the plants are unstressed they will produce more, or so I see it. Canopy flatness can a bothersome problem fought it last grow will not do so again so I train the crap out of everything with LST. Ya try your best and hope ya did right :)

@rhodes68, I'm using a 250w hps duel spectrum light aprox 10inch from canopy had to raise two of my plants to match the height of my gorilla glue have experimented with light height and experienced bleaching at 6" so 10" seems to be ok .I've now brought some garden wire and have bent branches away from main stem for better light penetration

@rhodes68, well I dont see anywhere near them numbers sadly with these babys. I'm only using a 250w light would you recommend using more powerful I'm growing in a 80x80x1.8 tent