I have a tunze nano osmolator I can sell. And a 2.5 gallon acrylic reservoir. The ato worked perfect in my old tank. I got a new tank and thought the ato went bad so i bought a new one. Now i have tested the ato and it seems to work good. Im in aliso viejo but could meet in santa ana depending on time and day. We can do a test to confirm that it works. Send me a pm if interested.