I’ve been on weekly water change routine of around 20%. I don’t really have a problem with my water parameters or anything at the moment. I’ve mostly kept freshwater fish and I’d do a 50-75% water change every few weeks. Doing 20 % every week on my new marine tank honestly doesn’t feel like I’m doing much to export nutrients. That being said, would doing a 50% WC say every two to three weeks be too much?