AQUATEK 3 Way CO2 Splitter for Solenoid Regulator With this splitter, you can connect up to 3 CO2 diffusers/supplies from a single CO2 cylinder This splitter allows precise regulation of flow and is capable of low flow rates Easy setup, no modification required to your CO2 regulator Easy setup, no modification required to your CO2 regulator Compatible with AQUATEK regulator solenoid