Kinda urgent-installing ETH 300 heater
So, I think this is right. You put the tubing from the filter on the end of the heater, then turn the collar dealie counterclockwise (so it is moving away from the heater) to tighten?
Husband and I tested it this way with all our might and it did not come apart, but it seems, intuitively, like the collar should be turned clockwise, as in "the tightening direction", as in toward the heater, to "tighten." Which doesn't work at all.
Can someone confirm that I've done it right before I start the filter back up? 8O
Remember that Darwin was mostly right!