Was another good week this week. Seem to have figured out the brown spotting, started adding sensi-calmag to the mix and the spotting has stopped and leaf color is darkening back up. Not sure if was from calmag deficiency or low nitrogen, but either way they look better so it seems like it was the right call. Did a light defoliation early in the week, maybe a dozen leaves per plant. Just the usual stuff under canopy or bunching too much. Has been much easier to keep humidity down since the heavy defoliation a week ago. Buds are really starting to look good on three of the four plants with the front left being furthest along. She is starting to pack frost already! Back left still looks a week behind, but coming in strong. Could this be a come from behind winner? Last day of the week took apart the Autopot system for a good clean. Clean the res, flush the lines with line cleaner, pull and clean the valves with dish soap, cleaned out the trays, wipe down the underside of the pots and back together it all goes. Been running for 40 days and this is the first clean, should be the only one as there's only maybe 40 days left. I find the B52 builds up a bit of sludge after a month or so, but worth using have seen noticable better grows since adding it to the feedings. Either way, an hour of work once a grow is nothing to complain about VS all the time out in hand watering. Also a big improvement on the newer 5.0 valves vs the previous generation. They are about double the diameter, so they gunk up MUCH less and fill a lot faster. Using the old valves I was cleaning every 1-2 weeks depending on feeding frequency. Lights 18" @90% pushing 700umol/s Watering 32L every 3 days Air domes running 100% of time 4" intake @70% 6" exhaust @50% 6" Oscillating fan @50%