Originally Posted by
Farmer Geddon
Best not to use pH up and down in the same mix. Use one or the other, not both. If you happen to use too much pH down, double the volume of water and add the same amount of nutes as before. That way, you've halved the amount of pH down in your mix.
It is possible for the nutes to be ok for the best part of a week. 10 days or more in my case. Because that works for some does not mean that it works for everyone. You'll need to learn how long your nutes are good for by testing. Measure the pH of the nutes every day and replace them if the pH has drifted out of range.
Find a glass bottle with a secure top and dilute the pH down. Keep a note of how diluted it is for future dilutions. An good dilution would be you needing 2ml of it to get the pH you want with a constant volume of nutes.
Acid to water, like you 'oughter. < Do not ever break that rule. Never ever.
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