Well then I apologize. I'm sure my frustrations regarding everything throughout this aren't helping here.
Some people just inherently 'get growing'. I think it's blatantly obvious - I'm not one of them. I'm doing what I can, in my own ways, to try to better understand things. I don't appreciate being made fun of for trying to learn in a way that makes sense to me. We all learn differently.
No apologies necessary. I know how frustration gets us.
So, here's what I'm trying to get at.
I'm not saying that your method of learning is somehow leading you astray. It's not at all.
What I'm saying is it seems like you're drowning in variables and clinging onto whatever you can as a life raft.
But what you need to be doing is to stop struggling and let people on the boat toss you a lifebuoy... you can keep track of the buoyancy of the debris as we reel you back to safety.
Let's say you germinate a seed in a peat plug and it gets a taproot going and then rots out again. Welp. The only thing you think you're using that countless other people aren't using is your water. Test that water; set the data aside.
Start over with a different water source. Test it now if you want; set the data aside - what's that data telling you that you
do know already? Nothing. Maybe that it's different than the water you were using, but you have no basis to make the assumption that that's going to be your impacting variable.. you're dabbling in anecdotes already; in blind assumptions based off of random information.
You germinate another seed in a peat plug and it rots out again. Well, fark. What now?
Okay, where is the peat plug? And what factors impact that locale?
Did you track your ppfd? RH? Temp? How about your VOCs? Is there a fan? Ducting? Microclimates? Microbes? aaaggggh... who knows! Shit. Now we're drowning again.
So, how many times are you going to make micro-adjustments until you do know? How many different sets of numbers are you going to have to compare until you find the equilibrium?
It will drive you nuts.
I promise you that those numbers will only make sense in the hindsight of a successful grow, make even more sense of the numbers that made an unsuccessful grow and, ultimately, the correlation of the two.
For now, trust our oral traditions so we can relieve you of some of that frustration - we've already run the googolplex of variables over our 4000-year relationship with the plant.