When you have a coolant loop that uses an aquatuner, it's often best to make the loop bypass the aquatuner when it is off. If it's done well, you don't need a liquid reservoir or whatever for buffer space.
Edit: HOLY CRAP GUYS! I took the video down. You are right. It STILL doesn't work. I find this very frustrating.
This can't break either, but I can see where the gap was created. I don't use forums a whole lot, so I'm gonna practice my @ calling.
Hey! @Tonyroid, see if this double bridge bypass works for you.