I have one of the manufactured systems (I was a Kickstarter supporter) and have to say it’s incredibly awesome!! My older water bottle one made it’s way quickly to the recycling bin!!
My issue is that the output of water at the top of the airlift spews droplets all over my window. It makes one heck of a mess. I ended up taking a pill bottle, cut off the bottom half, then drilled a hole in the lid just large enough for the airlift tube, and this has helped stem much of the mess.
The issue is that when the bubble of water gets to the top/end of the tube it is actually a bubble and it *pops*, making a little mess of droplets (2-3 of them) spray out. I don’t see another way around this from what I’ve done, but it’s apparent you have to let the bubble burst, and containing it inside a larger sealed vessel as I’ve made is the way to go.
What have you done to help this issue?