I just put my 2 new 6055's in the tank (they rock in a big way) and attached them to my existing Tunze controller that ran my 6000's. When I hit the feed mode on the controller the nanos spit every 15 seconds or so...the 6000's were always off during the 10 minute feed mode. It is quite annoying and can't be good on the motor to turn for 1/2 a second, shoot out water and then stop to be repeated every 15-20 seconds while in feed mode. Any thought as to what could be the problem???