I no longer have a koi pond, and want to sell both my automatic fish feeder and Pond aeration Kit. The fish feeder is a dual solar and AC electric KoiGrower model from the Pond Guy company. It's very large and works best with large or medium koi pellets. For small fish, such as African cichlids or goldfish, it comes with a restriction collar for small pellets, as well as narrower one that I made myself for very small pellets. It's a high quality unit. The pond aerator kit is a KoiAir 2 made my Crystal Clear. It includes two membrane diffuser plates, more than 50 feet of air hose (not featured in the photos), and an inline splitter for adjusting the air flow through each of the two diffuser units. I will also include an extra membrane diffuser plate. I want to sell both the aerator kit and fish feeder together. This is a fantastic deal, considering that the aerator kit sells for about $549 new and the fish feeder sells for upwards of $169 new. If you only want the fish feeder, the price is $25. If you only want the aerator kit, the price is $50.