Sensitive? LOL. Not at all. I'm a proud user of canister filters, and so far, knock on wood, its done me just fine. The only issue that I have is the amount of equipment inside the tank is pretty unsightly and that (so far) is the only reason why I would do a sump next time. However, the "ugliness" factor is not my question. If you do a search for "high nitrates", you will see a number of threads that the people are seemingly doing everything they can do (changing filter socks, water changes, etc.) and they are still having high nitrates.Not sure what the concern really is? I rarely see canisters mentioned as an issue....unless someone comes on asking why their nitrates are high. The most obvious answer is often canister filters not being cleaned as often as needed. And if someone has a sump with filter socks the answer commonly is clean those socks more frequently. However changing a sock takes me approximately 10 seconds to hit the feed button and switch out a clean sock. When i used a canister it was more like a 10-15 minute process and often a mess....so personally i am a hater of them....but used and maintained appropriately they do fine so if others use them then good for them.
So many threads lately about perceived slights lots of sensitivity going on i guess.
Does it take a little longer to clean a canister? Probably (I personally do not know), but the "10-15 minute process" for doing so isn't that big of a deal for me (for now).
Sensitive.
Ha!
I'm not a millennial.