Chris,

This is Robert/Majesticreefs, I've spoke with your last week on your plan before I ask snake to give you a call. Based on what I read here, are you still plan to use the Hiatt system as a filtration? If you are I need to point out with the Hiatt system the water come out on top then drain out in the bottom, so there is no need for a overflow because overflow drains the water from the top.