lolol,,,my friend you only t off the return line wiht a ball valve so you can turn it down ...i run a panworld 100pxx for return i run 2 ts off my return they are both 1*1*1/2,,,bothe have ball valves on them to control the output 1 goes to refug other goes to the reactor ,,if i where you i would save money on the reactor and get the geo at premium aquatics that is just my thought ,,geo is one of the best reactors out and less money then the one you piced