The fish I bought grows to 30cm long, also want a shark, so now I'm looking at upgrading my tank yet still use my existing external filter.

Current tank is 3ft and about 110L, my pump is good for 120-250L, so I want to go for a 5ft tank (60x15x18) which is 228L.

Anyone know anyone selling one or can point me in the right direction to looking for one?

Found this unit which would be ideal.

Any help appreciated!