i have read through your journal and i, like most others, am inspired and offer up the utmost respect to you for your knowledge and ability.thanks for journaling for us too.

im also a member at gardenscure.com and over there is a guy named rockclimber who is doing a grow somewhat similar to yours in size. hes growing a non-veg, sog, perpetual grow using an ebb/flow, harvesting monthly. his journal is impressive too (complete with construction pics!).

my question is one concerning yield.

hes harvesting one 4x8 tray a month and yielding 5 lbs. a month while you generated 36.5 lbs. from 2 rooms and 14,000 lights in 2 months.

im trying to find a common demonimator between you two and decide if its better to use soil like you are doing or go with the ebb/flow.

could you clarify as to how big the main 8 light room is youre growing in and how many square feet of garden is being used?

in doing the math it seems like youre yielding over twice as much as rockclimber but i cant help but believe im missing something in my assumptions or calculations.

.00125 lbs/watt = 10 lbs/8000W (rockclimber over a 2 month period)
.00261 lbs/watt = 36.5 lbs/14,000W (tranoble over a 2 month period)

his sog is yielding 8.41 grams per plant on 108 plants (per 4x8 tray) but youre saying yours is much more....and youre saying youre planting every six inches and that means 105 plants in the same 4x8 area as rockclimber....yikes! im confused on where ive gone astray or what im missing here. 20% - 50% difference between 2 experienced growers is feasible but 100% is alot of difference.

lastly, do you think youd get any better a yield if you made your boxes out of 2x10's since the roots could grow deeper?

thanks again for the journal.