Best filter for a 540 L

[a.person61]

Questions in the title
needing answers quickly as my filter is pretty much dead
thanks in advance

[marinum]

best sump :)

[a.person61]

Im guessing I would have to make it? I failed to mention that the trickle filter will still be in operation but the outflow from the new filter will be directed to it.

[Skip]

if you keep with water changes.. then any filter works.. :)