Ph is a rising, and not coming down

I notice after running the air through my water reservoir after adding a ph altering substance that the pH will go back pup closer to what it was before, and what "naturaly" comes out of the tap. I try to use anything I add stuff to right away and wash the water tank and refill it with clean filtered water for next time.To get any remaining chorine to dissipate,and to add oxygen i will turn my air on a few hours before i intend on watering for the day and add my nutrients per 2 gal watering can. and if doing a lot then i wil add it into the whole setup. but that involves more cleaning so i try not to do that.

I think "numbers" might be correct. not PH buffered, could also be something in the medium but its just clay pebbles so hard to mess that up. Easy to test it out. push some of the medium your using into a cup and some nutrients. then measure it a day or two later and track the PH. I have done this on the hour for 8hrs to track my one solutions PH. It did all its swinging within the first 3 hrs then slowed down a lot. Also if you have not done it yet. calibrate your PH probe. Pure RO water can damage probes so always have something in it in terms of fertilizer or dissolved solids. or store it in storage solution. I'm not a huge fan of AN brand. I find it overpriced and not a fan of how they do things. Good Luck!

I assume you are aerating your water and in doing so the amount of CO2 in your air can drastically change pH in water. This could be one issue. Advanced Nutrients is generally a decent nutrient that does not drift much because they load up hydrogen in there to keep it steady. Try mixing a small batch in a bucket, test the pH, let it sit undistrubed and come back in 24hours and test it to see if it drifted without any aeration.

Reverse osmosis water does not react in the same way in terms of pH. Try to make 50% RO water and 50% classic water. Your pH should be much more stable 😉👍

Try to top feed it water and flush it with ph balanced water. would say you may have to much build up in ur medium and even if u feed with the right ph you won’t get it down because u just over fed. Happens to me to sometimes specially when u enter flower it’s pretty hard to keep a steady ph. So I always flush my plants now when they enter flower then start over with lower dosage of nutes and build up to normal dosage in 1-3 days. Then I stoped having that problem. But that’s if ur medium is coco. For soil I would not flush.

sounds like those nutes are not ph-buffered, even if ph-balanced to start, because they clearly are drifting. Good hydro nutes should be resistant to drift. It's a common sense thing for a manufacturer to do. are there symptoms on the plantt? if not, don't overreact too much. Keep ph-down whatever you add.. you can try to go slightly lower pH but risk more complications with more drastic fluctuation, so proceed with caution. Just keep fighting the good fight. Ph-adjust and keep an eye on it -- most importantly the health of the plants.. if they are okay, don't do anything drastic. Consider a different product. E.G. I can tell you the pH of Jacks 3-2-1 will not drift on you. I'm sure there are others, too. Fertilizer is a commodity. There's really not a quality difference from one brand to the next, so don'toverpay for it. If you buy jacks in 25lb dry bulk bags, you'll save a shit load of money too. I grow about 70-80sq ft of garden over the course of a year. I spend 30 dollars/year on fertilizer. That's like 5 full 4x4 tents or 3 full 5x5 tents per year for better comparison for most people... i bet most spend a lot more than 30 USD on fertilizer if buying marijana branded stuff with cartoon labels that look like they belong in a sugary cereal aisle at the supermarket. plus, their formula is superior too. it'll work with a wider range of genetics. I rarely see leaf symptoms no matter how many strains i grow concurrently and pull off the same 55-gallon reservoir of fertigation water. pH is rock solid.. so rock solid i don't even spot check anymore. I can just assume it's fine, because it is.