On the eve of Day 77 from seed the finish line is within sight! The two girls with the airdomes were switched to water and flawless finish on Day 75 because when checking the trichomes they were looking 70/30 cloudy/clear so time to get them ready for harvest on 7-10 days. #4 is maybe 5-7 days behind and #3 another 5-7 days behind that, so have kept them on the main reservoir with nutrients while #1 and #2 run on the backup reservoir for finish.
Surprised my carbon filter is still holding up, she's on her second run and no smell outside the tent but inside it strong delicious old school weed smell. Haven't grown Northern lights in 5+ years, smell brings you right back!
One thing to note, when changing the plants to finish reservoir I also changed out the valves and trays to clean sets, as well as let the plant drain water from it's pot before placing on new trays.