yeah man, I used to shop at Sensible seeds,not the original. that shop was nice too. expensive but seedbanks tend to be crazy expensive.shipping is where the cost ramps up but worth it. you may want to look at the Vault too for future reference too. AFN discount n all that. well used to when they were a vedor here, butr chat em up some, good selection and stellar servive. where Im going in a bout a month for an order of photo beans if they got what Im looking for.,
and for stem strength, air,slight training and brix. look at High brix growing.also mammoth P says it increases stem strength and girth LMFAO but upwards of 6% on average.
https://www.autoflower.org/threads/hit-the-brix.14679/