plumbing in a manifold for future equipment needs

[B&CinB.C.]

Noob question
I'm plumbing a manifold into one of the return lines on my IM 75EXT . The plumbing was included with the tank ( I built the manifold myself ). Should the open side of the valves on the manifold be capped until used or just left open?
Thanks

 

[shakacuz]

if the manifold isn't plumbed as a closed loop i would close them off until you add to it. most of the times people add gate/ball valves to close the loop up until they expand and use the manifold.

 

[B&CinB.C.]

if the manifold isn't plumbed as a closed loop i would close them off until you add to it. most of the times people add gate/ball valves to close the loop up until they expand and use the manifold.

Thanks for your reply . I have two 1/2 inch ball valves plumbed in for the manifold as well as another ball valve in the 3/4 return line at the front of the manifold . I was wondering if i should cap off the open sides of the 1/2 inch valves until they're attached to something. Right now the open ends are over the floor behind the tank

 

[shakacuz]

Thanks for your reply . I have two 1/2 inch ball valves plumbed in for the manifold as well as another ball valve in the 3/4 return line at the front of the manifold . I was wondering if i should cap off the open sides of the 1/2 inch valves until they're attached to something.

as long as the valves are closed, i wouldn't be too worried about having to cap off the other ends. BUT, if it helps ease any anxiety, by all means...