So. Initially i struggled with humidity being too low during the initial seedling and early veg phase (tough to get it over 40% RH) and in the blue zone of the below chart. I hung wet towels over the passive intake appeture to raise the amount of humid / wet air being drawn in. This worked and I hit the blue zone.
I’ve stopped this some two weeks back since having developed more leaf mass the humidity is much obvs higher.
I’m struggling to keep it below 65% RH now and to stay in the green zone. I’ve tried running the cab hotter and cooler but still having issues and I’m usually in the upper blue/red zone.
The Sonoff TH16 temp & humidty gague is smack in the centre of the cab in free airspace and reading 65-85%.
When the lights go out at night I struggle to get below 75% RH even with the fans going all night. So always in serious under transpiration (upper red) and upper blue zone at best.
If I place the temp gague in amongst the plant branches I note that the temp reads about the same as where it normally is but obviously the RH spikes. In amongst the branches the RH reads 80-100%.
Seriously worried that as I get more advanced bud development progressing I risk moulding. Less worried about this on the Auto DPs but more worries this is an issue as i scrof and get bud development in the photoperiod Gelato 41.
There are currently no signs of mildew or any growth at the moment on the early stage buds or leaves. However, when I check between the leaves I note that there are many fan leaves that are often wet.
I have an oscillating USB powered desk fan running. I turn it 180* every 24hrs to give each pair of plants direct leaf shaking airflow and I think circulation is decent.
I’ve contemplated placing some small brushless 24V fans (1”x1”) in amongst the box to add more airflow.
I am also tomorrow gonna head out and get one of these passive dehumidifiers. Any experience with these in a small space?
Contemplating one or two of these to try drawn down moisture in what is a small volume box (8.79cubic feet / 0.25m3)
Waste of time and money? Should I just leave it alone?
Things seems reasonably happy. Well except for two branches which don’t look to have survived my attempt at high stress training and folding the branch double. beginner error and was too aggressive in the pinching and folding. Just went for it and need to read up on this technique a bit more before doing such brutal damage again.
Thanks for any input grower guys and gals.