Internal vs External Filter..

[cityguy]

Whats best for a Discus Tank, an Internal or a External Filter ? I am currently using a Fluval 4 external for my 65 gallon tank with 3 Discus in it.. do I need to improve on it ? :roll:

[AHC]

Hi mate, External canisters are the best so your good. Eheim will bring the standards up :wink: