AQUAEL MEMBRANA AP/APR PLUS 2 SZT. is a set of two high-quality replacement membranes dedicated to the Aquael AP 100, AP 200, APR 150 and APR 300 PLUS aerators. Membranes are a key element of the aeration system, responsible for generating air flow to the aquarium. Their regular replacement allows you to maintain the optimal performance of the aerator.