I currently have a 240 and 155 tank that I want to change plumbing on.the 240 is using a 4 ft. refugium located in a converted bathroom about 15' away.It has a dolphin pump that is supposed to pump 3600gph but has lost a lot of flow as it used to be throttled down but now runs wide open.I took it apart and cleaned the prop it did have a few snail shells trapped in prop but saw no improvement in flow.the 150 has been up for over 12 years now with pro clear wet dry under tank.I'm thinking adding a refugium to the 150 and wet dry to the 240.I now have a lifereef 300 sump and am thinking about using it on the 240 under the cabinet.if I do I need some ideas for the plumbing to incorporate it into the plumbing system so I reduce flow thru the refugium and increase filtration with wet dry.the lines going to sump from over on the left is 1 1/2 and goes over to a y directly under the right overflow, the overflows used to flow fairly equal .for some reason lately the left side won't flow as good as the right side. I completely disassembled the lines to check for blockages and it was all clear.so I 'm in need of some professional advise on how add the wet dry and replumb everything.Thanks mtnbiker41