Thanks again. I understand there can bee too much flow also. Can the sump/refugium be too big? I plan on having a small DT for now, upgrade to larger. If I put the sump in the basement, I will have a lot of room for a large sump for may later purchase of a 180 gal
tank. But start with a 40 or 50 to be sure I can keep up with all I need to do for these critters.