If you are going to stick to
calmag and pbp grow, I'd actually suggest you continue feeding half strength through week 7 and 1/4 strength through the first half of week 8, keeping an eye on runoff to make sure for those last weeks what you're putting in is what's coming out, or close to it. The last watering 2-3 days before chop you can rinse the media with plain low ppm water until you have <100ppm runoff, to clear any fertilizer from the vascular system. The reason most people use only water the last 2 weeks is to clear excess fertilizer from the plant, but they dont really know which specific nutrients they are trying to clear. You dont want an excess of any nutrients ever really, especially at the end, but the primary nutrient you need to have very little of at the end is phosphorus. Pbp grow already has very little, so the odds of having excess to begin with is low. Using a low rate of pbp grow ratio in the last 2-3 weeks ensures a better burn by reducing P to almost nil, but provides nutrients that the plant is still using to ripen without starving it, potentially causing premature ripening.
To add to this, a low dose of roughly 1/8th tsp per gallon of Epsom salts added to one single feed around week 5 of flower will also improve the burn characteristics as Mg aids in heat retention of the burning cherry of a joint. Too much can be bad, but a small dose to increase levels mid flower helps immensely.
Just a couple tips dude, you can take em or leave em.
