I set up my tank and everything seemed fine till I added start zime now my water is pink and it looks like pink stuff may be growing in it. I had an existing Goldfish and I added two new ones I done know what to do. I bought stuff to clear the water but thats not helping its just getting worse. My boyfriend had 4 minnows he caught and put them in the tank for like 4 hrs. I have no idea what it is. Its a 5 gal tank I have a filter. Can someone please help me