I run good for a week once a month, it does help clear the water a bit, and when fighting cyano
I "think" it would come back a bit slower.
The filters are really your choice, most people leave them in as bacteria builds on the material quite well, however some argue that it traps and slowly releases nitrates, both are right, so imo
it becomes a personal choice. I change my filters once a month, I'm not in the camp of the bacteria, I didn't always go this route but it was something I could do to possibly alleviate my cyano
. I personally didn't notice a difference at all.