Im starting to surf around for a good external pump to replace my blueline 1800. The blueline works. There is no chance of a leak.
And the flow is awesome from this blueline. But it is a little loud. When I turn off the closed loop the noise , there is no noise. lol
I have a mag 18 for return.

Anyways from what Ive surfed sicce is quiet quiet and it doesnt have psk2500 pump turn on problem after a shut down, which I do during feeding.
Any experience using it as an external pump please submit. How does it perform and any leaks? curious and thanks