Red eyes are normally caused by these conditions:
History.
DaVinci IQ Vaporizer.
https://cannabisgreenbook.org/blunt-green-screen.html
https://cannabisgreenbook.org/small-bubbler-bong.html
https://cannabisgreenbook.org/how-long-can-you-keep-weed.html
Yes, they work find, it does not matter how deep it is. How would that make a difference? At a max its 2 1/2 inces deep, I´m quite sure the flame will reach. Just dont go taking beat hits as you´ll be burning up the wood or corn cob or whatever and that taste nasty. You´ll run out more often cause eventually you´ll be stuffing it full lol you can get half an i/8 in one easily. Remove the bubbler from the rest of the unit, fill it a quarter of the way with water, and then reattach it. Turn on the device by pressing the power button three times for the titanium nail or five times for the ceramic and quartz nails. Once heating is complete dab your wax onto the nail. Cover the nail with the carb cap while inhaling through the mouthpiece.