I have a wet dry underneath my 75 gallon. I was told that this would eventually turn into a nitrate factory. I was thinking that having a sump would be better. Now what should I put in the sump? I know what I need to put baffles to avoid bubbles, and Ill place my return pump and protein skimmer. What is the point of the sump, is it just to have more water and have a place to put my pumps? Should I put sand in it to have a place for pods? Should I do a mud setup with macro algea? Thank you guys for all the help.