Alot of it is strain dependent , lotsa veg time , from seed -n- not clone helps , Bloom boosters , carbs , and shitloads and shitloads of light . Look in the "DWC Club" thread . Or look thru some of my old threads . In waterfarms or my own 5 gallon contraptions I've gotten 16 to 21 oz plants . That aint nothing either , search "shaggytruedope" "giant bubblers" on here . 3 lb plants in 20 gal. recirc. DWC and 5600 watts .
Peace
Crispi :stoned: