Replacement Diffuser Plates for KoiAir Aeration Kits. The single stick dffuser plate fits the KoiAir Mini Aeration System and measures: 10"L x 3"W. The dual stick diffuser plate fits the KoiAir 1 and KoiAir 2 Aeration Systems and measures: 10"L x 12"W. Each plate includes a 3/8" barbed fitting to connect to 3/8" weighted airline.
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