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I will aso add that the nutrient companies not only run their tests in d2w, but they only use RO water So nothing is accounted for with variables such as tap, spring, or well water This creates a ton of variables they cannot account for. They simply assume, as a general baseline, that the...

Solid points. For that reason I can see why d2w has merits, among others. Fresh nutes are fresh nutes. That’s why with recirculating systems I feel automated dosing is mandatory to keep things in check. And then using a nutrition line that is formulated for cannabis, so that the imbalances...

After speaking to techs with prominent hydro companies I can tell you the following facts: 1. When they test these nutrients they do so in drain-to-waste systems. If there are problems with recirculating system compatibility, the mfg has no idea until the consumer finds out for them 2...

You’ve tried A&B alone for an entire run? What nutrient line?

Turned out to be a pathogen. The Liquid Kool Bloom had severe mold growing in the concentrate. Contaminated batch from the manufacturer. Which has been occurring a lot. I keep getting Floraduo A & B’s from the growshop that have fully solidified crystalization in the concentrates. Softball size...

pH perfect? No pH needed? This doesn’t make sense. Can someone explain. Does this mean that regardless of my source water’s pH, I can just add floraduo and it will self correct? Or that the plants will uptake no matter what the pH is because this line of formula is magic? Im confused.

You sound credible. The comments I've quoted are of note to me. What are your theories as to the issues Im having? Should I just chalk up the pH fluctuations to "business as usual" and immediately flush the reservoir as some have suggested? If that was the case, wouldnt EVERYONE have these...

A stabalizer just treats the symptom. I want to get to the bottom of why the pH dives during specific weeks. And no, it’s not the auto doser.

I've never ran with h2o2.

Anyone?

How often does Hydroguard typically need to be reintroduced?

No I've ran the same number throughout. My reservoir is double the size recommended by the mfg of the NFT system based on this number of plants. But there is always a VERY strong possibility that the mfg got their calcs wrong and cannabis need larger reservoirs. I thiught the auto doser...

Im having a hard time going with the theory that the system is doing such a good job delivering nutrients that it needs more frequent flushes. I’d rather find out I was doing something wrong. But to add fuel to your theory, the pH drop isnt the next day after a flush. It’s always 2-3 days...

Great post. Much of this info I’ve been thru adnaseum. As for your question, Co2 injection is something only recently added to this facility. The pH fluctuations were occurring long before that. And with NFT on scale, there is no way to not expose the solution to open air. In fact, it’s how...

Im currently using less addititives than ever in my history. For over a decade my nutrient program was 8-part. Im down to just an A&B with humics at this point.

Im not sure how it helps me get to the core issue tho. I have no doubt it would mask the problem, if I was on RO water, of which Im not. In a lotta ways simply adding pH up would accomplish the same thing. Im inclined to think it has something to do with the heavy eating. Resi is flushed...

I may add a pH up to one of the unused dosers. But I’d rather solve the WHY. As in, why the wild pH drop. Simply adding pH up is a bandaid to the symptom. Not addressing the core issue. Maybe the core issue has been that this is just a natural reaction to the plants feeding heavy. Be it...

Yes. Been doing so for many years. Much more reliable than humans.

Dry nutes create a whole other list of variables & issues in my particular situation. I have to stick to liquid & auto dosing.

Yes. Yes.