if i make a few gallons of water set at 6.5 ph… can i let it sit for months without having to worry about the ph changing from sitting too long?
should i recheck the ph before using it or should it still be good and stay at 6.5 the entire time of storage?
does it change the ph of the water if the water sits too long?
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It does. Idle solution will absorb CO2 and create carbononic acid, which will make the pH drift lower.
You should recheck it and adjust as necessary before use.
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Ph right before adding anything!
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should i be re-checking the ph in my water bottle daily, weekly? how long usually can a water bottle sit before it starts to change
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A few days. Just pH it again immediately before you feed. There’s no reason to check it or adjust it daily. It doesn’t help anything and it’s just going to drift again.
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I would check it right before I go to use it, and otherwise let it drift freely. Not much point keeping the pH perfect until it’s going into the plant.
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I use a 10 gallon tub that I pump water to the plants from. The pH out of the faucet is usually around 8.2. I adjust it to 6.5 to water but usually don’t use all of it.
The next day, before watering, I check the pH and it drifts to anywhere from 7.4 to 8.0. I adjust it back to 6.5 before using it.
I have a bubbler in the reservoir along with an aquarium heater.
The short answer, as others have said, is that pH will drift and must be checked and adjusted before use.
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Good question I have wondered about that same thing