150l

EDIT: 30.05.22 So, I am not sure if the tetra has/had lockjaw in the firdt place? Is there perhaps something similar to lockjaw? When we got him, his mouth was wide open and he could only move it a little bit. Now after a week of treatment, isolation and a clean hospital tank, his mouth can...

I am currently setting up a new 150l aquarium and am trying to decide whether to buy an eheim classic 2213 canister filter or an aqua one 104f internal filter; if anyone knows anything about these could you let me know what is best and why? thanks.