Fluval Flex Aquarium Filter Mod with media baskets

After I bought a Fluval Flex 35l/9g (okay... just because it looked nice) I quickly noticed some flaws and / or opportunities to tinker :-)

So I started to redesign and add some things. This is Part 2 (Part 1 is a fan mount for cooling the water https://www.thingiverse.com/thing:3640543) of the project.

The whole project will cover cooling, heating, light control, water refill (and whatever idea I will have in addition) using an ESP micro controller and without any destructive modification