Mines different cos I recirculate the nutes. In veg the ph creeps up, so I go at 5.6 and let it ride up. In flower it's the opposite.
I assume the same happening in your pots.
So the pH swings down in bloom? [emoji848]
I’ve never tested the pots tbh.. I might stick the pH pen in one of the trays and see what it’s saying.. no idea what’s going on in there!