Vivosun pH Up & pH Down Adjustment Kit | 1 Quart

Vivosun recommends keeping nutrient solutions between 5.5 and 6.5. In this range, plants can access and absorb nutrients most efficiently, which supports vigorous root growth and higher yields.

Both formulas are highly concentrated, so start with just a few drops, stir, and retest. Add in small increments until you hit your target, since it's easier to adjust gradually than to overshoot.

Test your solution first. If the reading is above your target range, use pH Down to lower it. If it's below, use pH Up to raise it.

Check and adjust pH every time you water or mix a new batch of nutrients. Consistent pH balance keeps nutrients available to your plants throughout the grow.

Yes. The kit works with all plants, all growth stages, and all nutrient lines. It's suitable for hydroponics, aeroponics, DWC, coco coir, soil, and any other growing medium or system.

pH controls how available nutrients are to plant roots. When pH drifts out of range, plants can't absorb what you feed them, leading to nutrient deficiencies, yellowing, and reduced yields. A balanced pH improves nutrient uptake, water absorption, and disease resistance.