Originally Posted by ChoclateBetta
Im Anixous not Paranoid.
People are free to change water whenever they see fit, and typically it is better to change more often than less often.
I just don't see the purpose in doing it for the sake of doing it if the tank is cycled and the numbers are good.
I'm a bit paranoid, so I'll test more often. That's when I came to realize that doing a 50% weekly (at least for my 1 fish in his tank) was not required. I generally do a 25% just because I need to put my hand in the tank anyway to trim a plant or to clean the sponge baffle on my filter intake.
As always, your mileage may vary. Whatever is best for you is best, period.