HGV Condition - PH Up, 55 Gallon hub MRL-exempt: No residue to worry

MRL-exempt: No residue to worry about

Growers commonly run it on high after lights-off with windows cracked to pull cool night air across the canopy for free cooling

and re-test before another small bump

so it won't stall on organic debris or undissolved nutrient salts

The 45° angle eases the line into the pot so the run stays open

HGV Condition - PH Up, 55 Gallon hub MRL-exempt: No residue to worry17% Potassium Hydroxide pH Adjuster for Commercial Reservoirs Built around 17% potassium hydroxide and matched to the HGV Nutrients three part chemistry, this pH up shifts reservoir pH on a few mL per gallon. The salt profile stays predictable across the feeding window. The 55 gallon drum sizes it for central dosing systems, room scale fertigation skids, and cycled batch tanks where a hobby volume bottle would empty inside a week. Run it diluted.