WELP AS I AM STILL NEW TO SALTWATER TANKS TOO MY ANSWER IS YES.... ALSO AND PLZ SOMEONE SLAP ME IF I GET THIS WRONG MY UNDERSTANDING IS IF YA GO THE WAY OF REFUGE YOU DONT NEED TO DO THE SUMP SEEING THAT THE REFUGE WILL KINDA DO THE SAME FOR YAS AGAIN IF I'M WRONG JUST SLAP ME IT WILL SINK IN SOONER OR LATER :p