Originally Posted by CoffeeLove
I don't think any fish would be happy with no water changes. That's just laziness.
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Agree, discus or not water change should be done.
Once per week or month. I do 80% weekly for the first 3 month.
After that I do 50% per 2 week.
Some guy do 10 water change in 6 yr using a sump/ refugium