I am setting up a vivarium that will have a wet-dry filter and a small water fall in the display tank (about 4 feet of head above the filter). One of the main pumps I am looking at is the 1073.050. I like that it is a DC pump with controllable flow rate but I am concerned that it is much more pump than I need. What is the minimum flow rate that I can achieve?
https://www.tunze.com/US/en/products...id%5D=1073.050