Hi Guys.
I am using this for the first time inside my tanks. With Tygon. I plan to leave the clunk about a 1/2" from the back of the tank. I figure after the Tygon grows, It will be within 1/4" of the back of the tank.

How much will the BVM line grow? How far from the back of the tank would you put the clunk in a new install? 1/2"?

Thanks!
Dom