This ParlaScrubber provides an easy way to transfer heat to your aquarium via Light. It is not very efficient but in a pinch it adds a little heat to your aquarium water.
still in development. Presently my prototype is working great but I have to clean nuisance algae from the mesh approximately every week or it clogs the heater.
The top hole, or water inlet, is 3/8" NPT tapped to provide an optimal number of connection possibilities. a 3/8" barb end is included.
The bottom hole, or drain, is expansive so it should not clog and can be modified with an included water sleuth/baffle to reduce splashing and noise.
A large mesh insert, extra mounting clips, and an extra water-wand is provided.
This is designed to work with many available light fixtures. I include one similar to this:
