First, I don't know what to diagram as I only have beginner knowledge of what goes in the tank. I am purchasing a use 105gal reefer tank, sump, skimmer and return pump. So, the tank is already drilled. I don't have the foggiest clue as to what flows where and how. The only thing I can figure out is that the DT will have an overflow that will somehow flow to the sump. I don't know where the skimmer is placed in the line of flow. And I assume the return pump will push the water back into the DT. That's it for my knowledge. LOL
What about calcium reactors, top off capabilities, other devices that add to the chain? That's what confuses me so far. I did locate a source that may work. If anyone can check it out for accuracy and comment, I would appreciate.