Having acquired my boat in 2015 I purchased 2 200lt Plastimo bladders which lasted a long time but leaked consistently through the inlet and outlet. I replaced the port bag in October 23 and this bag did not last 6 months. I have repurchase 2 new bags to do both port and starboard tanks after modifying my inlet pipe to release air that accumulates when filling. I'm hoping that this resolves the bags leaking due to air in the tanks.