Sorry if this has been asked a million times but I couldnt find a definitive answer.
Advice on this site seems to suggest a pwc
of 10-15% per week at least in the early days.
I got to wondering if this means.........
1. 10-15% is the bare minimum you should do to keep your tank healthy, but you could change upto ??% and that would be great because???
2. you should never change more than 10-15%, if you do there are dire consequences that are???
Many thanks for taking time to read this.