Right now I’m just giving a half gallon Avery five days to stretch my roots to reach as far as They can. I’m only gonna veg five weeks I think and flip. If I do imma cal mag in small portions maybe 1/4 where it’s early. When I add my nutrients they’ll balance that part out. Last harvest I had issues with my ppm levels cause I only had a 95 cfm inline exhaust and I had to switch from hps to led halfway through. Second times a charm.