JBL ProSilent Aeras Micro Plus L

Extra wide air diffuser for fine bubbles in the aquarium, 27 cm long

Spray gun made of porous quartz sand mixture for fine bubbles
Simply plugs into a compressor (not included), fits into the aquarium
Large spray area. Length 140 or 270 mm. Invisible green color
For freshwater and saltwater aquariums. The second connector can be used to daisy chain multiple guns