Hi All - Looking for Aquaclear users. I am possibly looking to replace my aqueon55 HOB with something else. It's noisy! (like a coffee grinder) and I don't care for the filtration cartridges all that much.

The Aqueon is now the secondary filter with the Rena XP3 for the workhorse on my 55g. How do you like your Aquaclear units? Are they quiet? I have a few weeks to decide which one to get because I am still seeding the Rena.

Should I do the 70 or 50 since this is the secondary?