choice of filter

[zedcleaningservices]

just recently started a new tank setup. I have 30 litres and was wondering if the funel 1 plus is a good choice of filter or whether I should get a new filter system. its a hexagon tank joined by two pipes. I have two of these funel 1plus filters and they are placed in each tank. should I replace these.
thanks

 

[Orion]

I've never been a huge fan of internal filters just because they tend to be more trouble to maintain. I prefer canister filters when I can use them, but they are more expensive.

 

[KcMopar]

If its working for your set-up keep it. If its not doing the job then it needs to be changed.