Growing on ropeTo cut down on the amount of manufactured products we use, we have experimented with growing plants on natural fibres and ropes. This acts similarly to air conditioning for the fish tank, as the water is cooled as it trickles down the rope.
Natural materials e.g. hemp
Less polluting than plastic (obviously not if you're using plastic based rope)
Helps water maintain a consistent temperature
Can be fed to worms after use
A lot of hemp used for rope is sprayed with pesticides, so check sources.
We found there would be great advantage to restructuring the rope to make it more useful for plants to anchor.
We will come back to this idea in the near future.