Well Im back to making things, I have changed jobs and now have a day a week to work on open source projects just for the fun of it:
As usual the designs are open source, link is below.
You will need a 3D printer and Laser cutter.
Want to Make one:
https://www.thingiverse.com/thing:3866898
Want to Buy one:
Contact mike@aquaponicslab.org
Depending on the size of tray you want to use the price varies from $90-$240
the one showed as is £120.
Have you tried Soil Planter Mix for this. I used this for my Chaparral Biome and it end it was amazing. If you need to know more see here https://botanylive.com/chaparral-biome/