PH Pen

The PH Pen is a handheld, pen-style meter used to check the pH level of aquarium water, a key parameter for keeping fish, shrimp, and plants within a stable, suitable range. Its compact form makes it easy to store alongside other basic water-testing tools.

Regular pH monitoring helps catch shifts caused by water changes, substrate, or decor before they stress tank inhabitants, and a pen-style tester offers a quicker read than liquid test kits for routine checks. It's a handy addition to any maintenance routine, particularly for planted tanks and sensitive species.