License to krill

Make it stop.

Bruce Spiegelman

Supporting Member
Anyone know why my Tunze nano pump (same pump as on a 3155) clicks? It operates fine as far as filling, but every 15 seconds or so it makes a loud click and "jumps" a little. It's done this for months and I finally got irritated enough that i ordered a new pump assuming the issue was with the pump. However, the new pump does the same thing.

Make it stop.