what can i do to bust my gram per watt

i have a perpetual harvest setup,2x400w hps and a 600w hps soon to set another 400w good ventilation and a ac,iv been growing for about 6month now,im using a 15-30-15 for the first 3-4weeks for the next 4-5 adding molasses and 0-6-7 for the last 2 before the flush pure water and molasses,in the future im planing on getting a co2 sistem.im at about 0.5 per watt for now,any advice or suggestions on what can i o to bust that,for now i have about 7-9 plants per light would a smaller number of topped and trained plants increase yeild

boost.....

hey man, I found this thread really helpful when looking for yield tricks - might be worth a read! http://www.icmag.com/ic/showthread.php?t=118184&highlight=yield

grow trees in big pots!

dirt clean said:

grow trees in big pots!

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so less plants in bigger pots lst and topping is that a good way to improve my yeild

dirt clean said:

grow trees in big pots!

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Heres a question: Would I get a higher yield than a indica strain if I were to grow a sativa plant in a lets say 3.6L pot?

iloveit said:

Heres a question: Would I get a higher yield than a indica strain if I were to grow a sativa plant in a lets say 3.6L pot?

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always depends on how its grown, there are so many variables