Hi,
I own 55gal community tank for 8 years and since that two HOB Whisper 60 and Whisper EX 70 were running continuously.
Thinking it is a time to get a better filter. Two at the time little bit annoyed with cartridge changes and noisy.
Dilemma : canister or good HOB? I hear canister filters in case of long power outage will drain water from aquarium down to the floor? It's happened to one of our friend's, he had 1000gal tank in his basement and ended up the basement turned into great swimming pool. Cost him 10000 to fix all that mess.
We live on the country, outages happen often. Need something reliable.