I am an active member and elected officer of many Koi clubs and associations here in the Pacific Northwest and around the country for about the last decade. This provides myself with a lot of exposure to many problems and opportunities to discuss different topics with pond owners about their fish and ponds. I maintain several different Recirculating Aquatic Systems (RAS) at my home totalling up to 25,000 gallons and several dozen Koi. I enjoy learning about our hobby and have tried many different approaches to find out what works best for me and my aquatic charges.