I don't really have any advice to contribute, just curious: when y'all did fail for mold, was it visible on the finished product? Or did everything look fine visually but fail upon inspection?
We saw a puff of smoke when we cracked open a bud, but just the one, and we inspected a lot. 10,000 CFU's is a pretty low threshold, and you'd prob not see anything at all under 10,000. .. we grew it, and we had to test it. Part of the game.
Hi, old timer here who sways from spreadsheets when experience suggests otherwise. Just curious how would two exact grows differ if only variable was 55% humidity / 70% humidity for last 2-3 weeks of flower? Would yield suffer so much?
I guess more commercial operation, small numbers become large but no numbers full of mold is no good to anyone.
It was just a bad summer for mold spores.... mushrooms growing everywhere outside. We prob just brought it in on one of us and once it gets in there, if you don't have a microbe scrubber (AirROS)... it's gonna find a home in your buds and grow.
Not experienced, but you might put some sensors underneath and inside the canopy if you don't already. With a hygometer inside the canopy you might be a little more brave to raise the humidity if you know what's going on it there.
It is probably colder underneath the canopy causing the humidity to be higher than you want.
I gave up on VPD since I couldn't control it. I'm curious though, do you measure the VPD using leaf temperatures or go by a chart?
I use hygrometers everywhere.. I think I have 6 in different places along with the Spartan at the canopy. I try to find an average on everything, but the Spartan seems to be the most accurate. I do hit the leaves with an IR meter to monitor where they are. I can control VPD, but I got a full room this time, and as you know, it's alot of work to fail at the lab.... just trying to find my comfort level with how far I can push VPD into flower and pass labs... If we fail a whole room.... I'd prob throw up. But!... I think the AirROS will do it's job, as long as I do mine.
Thankfully, that failed round was an experiment, and I was only running one tray, and not 3.