Originally Posted by jonhova
leaving 6.0 ph maxibloom water in a catch tray is not a good idea. The water drifted down into lockout zone after less than 24 hours.
I wonder how guys stabilize the ph in deep water culture. Hmm.
Despite my moniker, I can't call myself an expert or anything, but the most experienced deepwaterdudes let it drift a few points and hit all the notes of the scale
When feeding/changing res, pH starts at 5.8 and drifts up to 6.2-6.5 or even to 7 (not so high for me), then back down with the res reset. Res temps are super important to uptake and root health, more than trying to hold a squirming pH in place. Plus, not all nutes can be assimilated at one pH. It will always be a compromise if you try to hold it at 5.8 or 6.2, better to let it drift between.
With sats that don't eat a ton and other predictable plants, it's pretty easy to find a sweet spot where water and nutes are being taken pretty evenly and hence pH and EC pretty stable within a certain range. Just got to be sensitive to how much they're actually eating and watch the plants like a hawk for early deficiency signs.