Silicone tubing pulled off the bubble counter for the second morning in a row. There is just NOT a good way to get silicone tubing on these glass beetle counters easily and safely. It is not that they are too delicate, actually, I smacked mine off the top of the light hood this morning, and it was fine. These things are built pretty thick. But at the same time, they do no taper the glass where tubing needs to slide on. I again heated up the tubing with my heat gun, jammed a pen down inside it to stretch it out (this works pretty well), and then jammed it onto the glass. This seems to work well in day, but I am pretty sure I will find it has slipped off again tomorrow morning. At least I am not running co2 at night, so there is no co2 loss.
Even though this bubble counter works well at counting bubbles, is pretty to look at, and is fairly sturdy for a piece of glass, I dont think I can recommend it to anyone for the sheer PITA of installing it. Sorry Green Leaf Aquariums...