No water changes

[Stumped]

Originally Posted by eWarren

WOW, if this is real, but then why does all fish shop staffs recommend people to do water change? Or do you need a huge skimmer / refugium so one can get away from water change?

Water changes facilitate the addition of trace elements and removal of waste. Even if you can have a healthy tank without regular water changes there is no real reason for most people not to do them. It's not like you need to do them daily/weekly, so compared to other types of tank maintenance you really don't invest a lot of time into them in the grand scheme of things.