I don't pH anything and haven't in years. The pH meter caused me to chase my tail and micro manage EVERY thing. I just trust the nute formula I've worked with for years to take care of everything, and it does. If you've been doing this for any amount of time you can look at the plant and tell if anything is off. I'm not just talking about a yellowing tip that's fairly common, if you have a pH problem, things can get ugly quick. For the most part most nutes take pH to a reasonable level, it may not be perfect, but it's good enough.