I never said chemicals have a positive effect on microorganisms. I did say however, that humic/fulvic have a beneficial effect on the population, and are NATURAL chelators.
I shouldnt have to explain how humic/fulvic acid benefit the life in the soil. Your name is team microbe, I would hope that you understand how this works. Its not overly complicated. There is plenty of information on the subject.
Coco/perlite+beneficials. No mold ever.
I would call this a positive effect....
[URL=https://www.icmag.com/ic/picture.php?albumid=58363&pictureid=1369852&thumb=1]View Image[/url] [URL=https://www.icmag.com/ic/picture.php?albumid=58363&pictureid=1381715&thumb=1]View Image[/url]
Keep your plants healthy with a balanced diet, and you wont have to worry so much about bugs and fungus/mildew/mold. Get your brix levels up and I bet most of your problems go away.
While I agree that keeping plants healthy with a balanced diet will result in high resistance levels, I've gotta say that a balanced soil system is ideal compared to soilless mixes. Those plants look healthy though, you're obviously doing a lot right here. Respect for that.
However, in a soilless mix like coco/perlite - we're missing the main components of a healthy soil system. We need humus to provide a diversity of microorganisms, a big role in plant health. Humic and fulvics can only do so much if we don't have a good 20%-35% humus already in the soil. Balance is everything in microbiology, and when one area is out of wack it effects all other areas in the system as a whole. There's no doubt you can grow some healthy plants in your set up, that's clear as you've shown us. But are those plants at peak health? Can they be healthier? Can they be more resistant? I think so. And I think that's a good thing, when we stop progressing as growers we don't grow, we're stunted. I think you can do even better next round, just by incorporating compost into that mix at 30% of your soil volume.
Brix levels def dictate health levels in plants, and I suppose that my claims wouldn't be valid until a side by side with your method vs. mine was conducted. But to my knowledge, a mix in 1 part aeration, 1 part peat, and 1 part humus creates a balanced environment and proper CEC for a healthy microbe population and thus, thriving plant immunity. Microbe populations can certainly be sustained in soilless mixes, but everything is on the tipping level since it's fed via drenching. "Soil" consists of organic matter, the engine behind plant processes next to photosynthesis. The ratio in microbial levels between a soilless setting and an organic setting can be up to 1:1,000,000,000,000. Probably even more than that. After observing nature and natural processes this past year, it doesn't make sense to garden any other way other than bio mimmicking. Simply put - the proof is in the pudding.