OK I am new to this hobby.. I have a question.. what is better a wet/dry sump or a refugium sump?? I have some LFS stores and they say come here to find my answers. SO which one is better?? I have a 75 gal tank which I want to do is fish and a couple pices live rock so that the Hermite crabs and shrimp to hid and eat.. I would like to out about 5 to 7 fish in the tank.. is that too many for that tank?? I have searched thru the the post and have not found any thing to help me out.. thanks for the help..