Had the same problem. I used coolsleeves with the thin Tygon 1/2 inch tubing. With a Eheim 1250 it worked fine, when I hooked up a Swiftech MCP350 it sucked the tube flat despite the coolsleeves. I bought thicker Tygon tubing, it seems to me a better solution than metal springs in the tubing. Too much flow resistance.
|