JBL ProSilent Aeras Micro M, Air stone for fine air bubbles with large air bubble surface

Air pump accessory for: air diffuser made from an ultra-fine-pored quartz sand mixture, for particularly fine air bubbles. Easy connection of the diffuser to an air pump (not supplied), for positioning in the air inlet. Large 140 or 270 mm long surface, discreet green color For freshwater or seawater. Second air intake for connecting several diffusers in series. Includes: 1 aerator JBL for fine bubbles, Aeras Micro Plus