I'm looking at doing a straight run of MB 8mm line rather than a loop. Then the 3mm Tee'd off that 8mm. Seems like a valve at the far end of that 8mm wound be a good thing. For bleeding air, etc. What is recommended for a valve there? The standard BM valve? http://www.planetearthhydro.com/products/Tropf-Blumat-Shut-Off-Valve.html
Those are what I use......