55 Gallon

[jackbc48]

i have
1black ghost knife
3silverdollars
2rosy barbs
1pictus catfish
1dwarf gourami
1fire gourami
2 bala sharks
the largest one is the black ghost knife hes 4 in
WHen the fish get bigger do i need a bigger tank?
Should i change my 60 whisper power filter to a canister?

 

[williamc]

yes u have a petty overstocked tank
balas grow very big and so do black ghost knifefish
I would also listen to other peoples opinions

 

[erk628]

i have
1black ghost knife
3silverdollars
2rosy barbs
1pictus catfish
1dwarf gourami
1fire gourami
2 bala sharks
the largest one is the black ghost knife hes 4 in
WHen the fish get bigger do i need a bigger tank?
Should i change my 60 whisper power filter to a canister?

If there still small you should be ok for now, but you will need a bigger tank as they grow. With all those fish you are under filtered. I would get a canister and keep using the whisper. If you can't afford a canister get another HOB.

 

[williamc]

yeah agreed but the silverdollars,knife fish,bala sharks and pictus cat all grow pretty big and you will eventually need a bigger tank