Hi all,I work at a golf club and we have a medium to large sized pond close to our clubhouse, we have an oase pondjet floating fountain installed. We have always had trouble with the impeller collecting grass clippings and blocking up which need removing almost every other day. This time however the pump has completely burnt out. My question is does anybody know of a retro fit pump rather than an genuine oase pump (this is our second pump ) any suggestions will be gratefully recieved