During a water change the tube leading from the pump in the sump leading to the return at the top of the aquarium broke off. I was finally able to get that replaced but when I started everything up again the pump compartment in the sump kept losing all its water and not refilling. Even though I ran pumps my aquarium over night I lost most of my fish. I thought I would try to get help here giving up. This is a Red Sea 350 with usual plumbing. Thanks for any help you can give me.
