Bluelab pH UpOptimum growth needs optimum pH. And Bluelab makes optimum simple. If your pH isn't in the right rangeand that's 5. 5 6. 5 for most plant varietiesyour nutrients are likely wasted. Too high or too low, and you're in trouble. The result is nutrient deficiency or complete nutrient lockout. A sure way to unhappy, unhealthyeven dyingplants. Bluelab pH Up Solution is formulated to the highest standards. Just add what's required to raise pH. Your plants