That is a really cool pico design!100% DIY here
I find off the shelf options are just not flexible enough to my ambitions, or way to expensive.
Like my 1.7L Pico Reef concept:
3D Printed Base, top, pump, and custom circuit board and code to run it all. You can follow the build so far here:
IKEA 1.7L Jar Pico Reef
It is all part of a project to make a cost effective solution for pico reefs. Everything designed for the 1<10L size.
- Paul