P.H readings and Dissolved Oxygen

Manufacturers could easily add aminos and humics to the base nutrient but few do. They want you to buy the bio stimulators, bio chelates and catalysts in a seperate jug...bastards.

since1991 said:

L Aminos like glycine and humic fulvic acids (vitamino) will make hard to move around calcium much more available.

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Yeah, that's definitely the direction I want to be looking for my next grow. I'm so late into flower on this run that I don't want to mess around with anything anymore, but I'll be looking at that in the next one.

This was never a problem for me in previous grows, and is one of the very few complaints I have about coco. Just needing that little bit of extra magnesium was all it took to upset the balance of nutes that I was used to running.

But, it's a minor complaint, because it's an easy problem to tweak. And to be honest, it's taught me something important - if the technique that I was so used to using was so easy to throw so completely out of whack, then I was pushing the envelope more than I realized. I can actually trigger the problem just by throwing one ice bottle into a perfectly clear reservoir - the nutes will be in perfect balance, I drop in a 1-liter bottle of ice, the tank temp drops less than 5 degrees, and as I stand there watching it goes cloudy and milky as the dissolved solids bind and precipitate.

That's too close to the edge; doesn't leave enough margin for error. I always like to have more of a buffer zone than that. This has taught me to rethink my system and build a little more of a comfort zone into it.

Yeah build a margin of error or headroom in your tanks with the meters and whatnot. Smart move and good way to look at the overall system.