Hi everyone sorry to dig up an old thread.Just needed to find out afew things for a simpleton like me.I have a similar style tank,an Aqua Vital 620,i then moved all the noodles into the longer section on the left,covered by the black sponge,which all sits below the spray bar.Now the next section on the right i have removed the noodels(placed into left section) and now only have the white filter wool layed down first and then a layer of the black sponge.Now that i have it setup like this water is flowing through the filter section and back out the return snorkel and hole very fast.
Any ideas please?