Originally Posted by BettaBoy5000
Can cleaning a tank too much kill a fish
Not directly but can cause issue which can lead to the fish dying. Probably the biggest issue is stress.
If you have good routines->water changing, good filtration, feeding properly etc, you should not need to clean too often....
Originally Posted by bubbaboy
depends how much you clean, 20% water changes weekly is recommended
50% or more might shock your fish
Actually 50% is a good percentage of water to change weekly. It all depends on stock and stock levels of course but 50% seems to be the most common percentage....