Would this work?

[BillNye]

So I will be purchasing a neptune dos here soon and wanted to know if something like this would work. I plan on dosing Ca and Alk but want to use these valves to make it possible for a water change, feed or dose something else.

Obviously I would have to manually change them but if the valves were plumbed before the pump head, couldn't I pull from different containers?

 

[tennesseebob]

yes, as long as some fluid mixing isnt problematic