aquarium fish tank plastic co2 diffuser tessellator duster dual zuignap

100% new and material: ceramics + plastic color: black + kaki super diffuse efficiency to co2 resolution effect designed for screw lock on the co2 tube, do not worry to loosen the tube due to pressure and cause damage assuming fine ceramic that provides co2 is dissolved in water with highest yield super micro hole nebulization u type air inlet bubble invisible return valve measure: see the p quantity: 1 pc note: due to the difference between the different monitor