I have been seeing alot of people saying that they have great filtration so their water parameters should be fine. All your filter does is take ammonia and turns it into nitrates. Which means it does nothing for nitrates
Get a test kit and change the water till it gets down to about 10ppm nitrates and check it again in a few days, by doing that you should get an idea how often you have to change the water and how much water to change.

Get a test kit and change the water till it gets down to about 10ppm nitrates and check it again in a few days, by doing that you should get an idea how often you have to change the water and how much water to change.