Great. Sitting at 750 ppm and adding 3ml each part A and B nutes to water every other day. Set at 750 they lose about 25-30 ppm and half gallon water per day. My buddy says I'm underfeeding since I'm at week 7. But I'm reading the plants and they aren't deficient. The tip burn showed up on all my plants even at 1000ppm (.5 scale). Went to 800 and finally 750 and I like this zone. Buckets holding pH steady and plants eating/drinking. My buddy says since I'm underfeeding I won't have the bud density he does hes telling me I need to have my buckets at 1200ppm