Tygon
Seems to be the latest magic word in wc'ing :shrug:
I've seen to many problems with it to ever want to use it again
Tygon (and especially the large one with thin walls) bleeds like hell ...
I'm using siliconetubing now
Much more easy to come by, very cheap, as bendable (or better) and doesn't bleed a single drop
T-piece should work fine, res can be tricky with that 1250. Have seens enough that the air was sucked back in the circuit because of the power of that pump