A great use of the pump-I did the same on my return-presently allows the ability to run 5 different things-I thread the PVC and added John Guess type valves so they are closed and I just plug in the tubing when I need to run something -I change things up a lot ( or used to ) (nutty) carbon, GFO, Bio pellets, sulfer reactor, calcium reactor-heck even a tube for drip acclimating. Now its just a calcium reactor-everything else is history
I'm just a bit worried about doing it now that it's all plumbed and working whether to hard plumb it all and adding that loop for the reactor. It's a durso drain pipe and if I pull that pipe out it'll drain the tank will it not?