Hello! I have a 47 gal saltwater tank, all in one that’s been up and running for 3 months. Before this, I had a 29 gal with external filter. What are the recommendations for cleaning the internal filter chambers? I just noticed there is red debris in the chamber. I do water changes once a week. I clean the socks weekly. The water looks good as far as clarity and fish and corals are doing well. My nitrates are up at 30 which is new. I did start feeding corals over the last 2 weeks.
Any help appreciated.
Any help appreciated.