Frequency of water change
I'm sure this has been covered somewhere in the forum, but can't seem to find a thread.
How frequently is a water change needed with a high tech tank? Is it needed at all?
I'm noticing that my parameters are pretty good at the end of the week and don't really call for a water change. Nitrate levels are naturally staying low. Are we worried about trace nutrients or toxins building in the tank? Looking for sound science on this. I guess I'm asking, what's the point of doing a water change if all the parameters are good?