Arc Combo Tank
 

Guys running the ARC combo tank how do you know when your coolant is full? Also any tips on getting the hose from the boy of the tank to slide of the return? Thanks

There's a site tube on the coolant reservoir side. I got it to roughly half and if the car pulled in any more i'd top it off.
Not sure what your second question is asking.

I should have proof read that one a little better. I was asking tips for getting the hose from the bottom of the tank stretched over the return line. I managed to stretch it over night and get it on.

Thanks for the assistance on the fill level.