High 967. I have used Nova bloom in the past for veg>bloom with good success and still use it for seedlings and mothers at 400-450ppms. But the idea of bubbling the volume rez although good to keep ppms stable and not precipitate/separate makes me want to warn of clogged feed lines, I still use 1/4" feed lines from vol rez to control rez.. I have stopped adding pre-mixed nutes to my volume rez while at the same time feed lines are open. IMO, the dirt/crud that builds up in the bottom of the volume rez circulates that crud which is sucked into the feed lines and potentially clog that/those lines. that line is shut down for a couple hours before topping off volume rez before reopening so that dirt/crud doesnt have the chance of being sucked into tat line... my feed schedule is about a quart every 1.5 hours, 24/7 in bloom. I do not look at PH very often.. makes me crazy. I've had no ph problems with Jacks+ that I know of
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