668 DAYS - NO WATER CHANGES ..and going strong !

Corals like dirty water. I take a cup (plastic drinking cup) of water out, and add a cup of saltwater to my tanks when I feed, and top off as needed. When I first got in years ago everything died when I changed the water so I stopped. Unless things start looking bad, or an anemone dies I don’t do water changes. I have a 75g with 2 hang in filters only. Going on 5 years now with no issues. I do keep them clean, and check my water every other week.
I’m going to guess that you don’t have a tank full of high end Acropora though…?
 
Also if you were on the team “no water changes” your corals would not have to go through this ever couple weeks… 50% ish of my coral is out of the water…
IMG_4463.jpeg
Using a Kamoer X2S-R for water changes, my water level stays constant throughout the process, so that tenuous argument is null and void…
 

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