Hey there. It seems to me that you’re a good grower but you’re harvesting too soon. No cannabis plant is done with only 3 or 4 weeks of flowering. Breeders usually quote flowering time for photoperiod plants (7-12 weeks) and sometimes total lifespan for autos (and outdoor always takes longer).
This strain is 75 days flowering so about 11 weeks of flowering. You’ll get more potency and much bigger yields by waiting longer. Of course, your Kerosene Krash was huge, but plants stop growing when the buds are ripening. Good luck and cheers.
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