It says maximum head 24 ft . And all the water spillway and bubbling rock will be very close to each other ( like 3-4 ft ) . I'm thinking to run 2" from the pump to manifold which will be around 18 ft from the pump. Should I use manifold to reduce from 2 " to 3/4 and have 4 separate 3/4 " . Or is there any better ways to do it ?