Parts

Calibration solution with pH 4.0 for pH electrodes.

Calibration solution with pH 7.0 for pH electrodes.

Solution for the cleaning and storage of pH electrodes for aquariums.

Bacteria, lime and other impurities which settle on the electrode can falsify the real pH value. The regular cleaning and calibration of the electrode ensure precise measurement and an unaltered pH value. Electrodes always need to be stored in a humid pla

A refill can of CO2 Depot for the Tetra Optimat set.

JBL ProFlora Safe Stop is a special non-return valve for CO2. Non-return valve with washer, pre-tensioned by a spring, preventing water leaking into the pressure regulator and CO2 cylinder. CO2 has a very powerful diffusion strength which, if a normal non