GHL Doser Maxi 2.2 Extension The GHL Doser 2.2 Maxi with a flow rate of up to 320 ml/minute is ideal for automatic water changes, level control, and dosing in larger quantities. Due to the precise 24 V stepper motors, micro-doses of 0.1 ml are also possible Robust mechanics and highly efficient stepper motors even allow continuous operation at constant speed,...