This video details how I do water changes. : ) – You should change 50-80% of your water at least once a week if your tank is cycled (I usually do it every 4-5 …
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![](https://goldfisho.com/wp-content/uploads/2016/07/goldfish-care-changing-your-wate-1024x1024.jpg)
This video details how I do water changes. : ) – You should change 50-80% of your water at least once a week if your tank is cycled (I usually do it every 4-5 …
source