Bluelab pH Pen special-order When you want a dependable

When you want a dependable nutrient backbone that stays consistent from start to finish

plus an IPX8 protection rating for submerged operation

Complete kit includes one duct fan unit

consistent movement without taking up extra space

Monopotassium Phosphate

Bluelab pH Pen special-order When you want a dependableBluelab pH Pen is a handheld pH meter for quick pH and temperature readings in nutrient solution, built to help you keep solution conditions in the right range for healthy plant growth. Its also a portable pH tester that makes routine checks feel simple, especially when you want reliable numbers without a full bench setup. This pH and temperature pen is designed for everyday spot checks in solution, with a compact handheld design thats easy to keep on