I'm Tiago from Portugal.
Here is my system with 2 aquariums (they are connected and share the same water system).
The big One (on the right)
Glass | EHEIM 200l + Stand DIY [100cm x 40cm x 50cm]
Eheim 2211(lift water up to refugium) Eheim 2215 + Eheim 2215
Weipro MX1019 +...