So you wanna get some more weight.....from what I understand the plants use the resin to catch pollin, if you stess them out a bit, they will work harder at producing more bud to catch resin as they feel threatened and wanna reproduce......some common practices include takin a thumb tak or toothpick and prickin the base of the stems that have your biggest buds......don't destroy the plant but piss er off a bit..you have quite a few plants there (really nice lookin I might add) so it might take a bit of time, but'll be well worth it!!...you should see a change in a couple days..and it won't cost ya anything, as organic as it gets !!...hope this helps....oh ya and Im not talkin out my ass....there is quite a bit of lit on this if you look for it.....try google and searching "Stress
marijuana plant for more yeild"