just posting some thoughts about my return plumbing. It does seem like two cheaper / smaller pumps may be better than one. Plus, when I tap in for the main display upstairs, I’m fully expecting to have to drill into the sump and run an external pump. So this system would only run the low bow and refugium, and then the equipment manifold.
I’m thinking of a two pump system, maybe two Red Sea pumps. Not sure yet and would welcome peoples thoughts. Trying to stay under $600.
I like this manifold I drew up as it lets me easily direct the water where I want it to go via ball valves.
In normal operations, the equipment manifold would have its own smaller dedicated pump, and the frag tank would have a slightly large one.
If the frag tank pump were to break, I would redirect all flow from the manifold pump to the tank line.
If the manifold pump went down, I could either redirect some flow from the frag tank pump to the manifold or not depending on what i decide is needed.
I probably only need one ball valve between the pumps…whoops.