I tried searching for this and guess I dont know how to search for what I am asking as I am sure it has been covered somewhere so sorry about that.

I am about to buy a 1/4 hp rotary vain pump and would like to run 2 difusers (3/4 acre pond 11' deep with avg of probably 6' pond is an irregular quadrilateral shape) The pump will be 300' from the pond edge in my well house.

It appears that most dual systems hook up with a dual valve manifold on the pump and there are 2 lines running from the pump to the pond (twice the hose!!!)

can or should I run a single line out the pump 300' (maybe a bigger diameter?), to a junction box at ponds edge and split the line there with a dual valve?

any suggestions.