1% per day for me. Continuous water change system.
I've read lots of threads like this and I've yet to read anyone who says they haven't done ANY water changes for 5 years and their tank looks great. Folks who claim to never do them either have only been doing so for a year or just mean they don't do scheduled water changes.
I don't really understand how it would be possible as detrimental substances must be building up in the tank over time. Our export methods (skimmer, refugium, etc.) are great but it seems implausible that they export every single "bad" compound that could build up.
I've read lots of threads like this and I've yet to read anyone who says they haven't done ANY water changes for 5 years and their tank looks great. Folks who claim to never do them either have only been doing so for a year or just mean they don't do scheduled water changes.
I don't really understand how it would be possible as detrimental substances must be building up in the tank over time. Our export methods (skimmer, refugium, etc.) are great but it seems implausible that they export every single "bad" compound that could build up.