220 gallon tank
Stock is
1 silver arowana
1 black ghost knife
1 ornate bichir
1 lowei bichir
1 hoplo catihs
1 fire eel
2 albino Oscars
5 bala sharks
Everyones pretty small now biggest being the 6-8in oscars
Currently have a normal wet dry filter but kinda wanted to try something different and more efficent maybe ??
I had a couple of ideas of something like this
Saw these 2 designs online seemed pretty intesting
Any ideas ?

Stock is
1 silver arowana
1 black ghost knife
1 ornate bichir
1 lowei bichir
1 hoplo catihs
1 fire eel
2 albino Oscars
5 bala sharks
Everyones pretty small now biggest being the 6-8in oscars
Currently have a normal wet dry filter but kinda wanted to try something different and more efficent maybe ??
I had a couple of ideas of something like this
Saw these 2 designs online seemed pretty intesting
Any ideas ?
