27 September, day 80 from seed. Third week of flowering finished. Today I emptied out the reservoir. We start today with new solution containing PK (week number 4 of flowering Hesi Hydro diet). All plants and flowers look healthy but I noticed some salts residues on some leaves. Carbon filtered air extraction is working all the time and still doing a good job: it is its 4 cycle but no smell detectable. Sorry for this very lazy diary. It's more for my use than for sharing or showing.