This is a video of a Eheim Jager aquarium heater and a cheaper aquarium heater.
These heaters are both on and heating up out of water, they are then dropped in to cold water.
See the difference quality glass can make to an aquarium heater.
red female lays eggs against glass, orange male then passes over them fertilising as he goes (sorry about the sideways shot and poor quality). Both parents are actually red dragons, female happens to be a more intense shade of red. Fry all hatched, but tranfered to a different couple for raising - a red turk & red snakeskin, who had their own batch at the same time, but didn't have a fetish for eating their young.
This is a quick or maybe not so quick shot of the plants in stock this week at Boronia Aquarium.
Sorry for the bad video, I am still gettin the hang of this.