Hey so I’m going on a 12 day trip and I have a 100 gallon reef tank with a couple of clownfish, some invertebrates, and some coral and my cousin comes to help with pets and I always have to tell her not to over feed and “feed less then what she would think” but somehow she finds a way to over feed them. I have a 120 gallon protein skimmer along with a 50 gallon sump. When I come back the nitrates and phosphate levels are crazy high. Any advice what I should do or tell her?