Hey psyte! great looking plant first of all, lookin pretty fuckin big. In my waterfarm i dont use a PPM meter. every week i make a full nute strength resivoir and during the week i just top off with regular water, never a lock out/defficiency's. Actually i dont even know what the hell my PPM of water is.lol. never had a problem. Sounds like you need a bigger resivoir. the bigger it is the more stable PH and everything else stays. I love how simple the DWC sysytems are. The waterfarm has been extremely easy to clean and maintain. i actually feel like i dont do anything because how easy they are. I just go in and check water level and top off. I say keep a extra couple outside buckets avaliable you can take plant out to trim up, train, or just to clean the whole system out. It really allows you to spend time with your plants, making sure their is nothing wrong, train them, and just plain watch them grow.lol. The added gowth hydro produces is unreal! almost to the point where one has to see it to believe it. I know did.lol. Only thing that is that you can really only run one strain at a time. or maybe some really close genetics. Since flushing would happen at different times with different plants i think it might hurt yield a little bit. Which is why when im done traveling ill be a dirtbagger doing vertical. i can then run serveral several strains and not have to worry that every strain likes the same nutes. I feel that my querkle has stretched the same amount as yours and maybe near the end of its stretch. As yours stopped it bigs stretch on its third week (i am on my 3rd week as of today). Seems like i have 2 more weeks till these things start packing on some wieght, im using your records to judge mine off of.