Hello! I have been treating my tank for ich for approximately 3-4 weeks. I’ve done my 20% water changes, vacuumed my sand, and cleaned out my filter media once it appears the ich is gone. However, every time I do this, the ich reappears on my fish the next day. Can you give me an idea of what I’m doing wrong? The other weird thing is, the ich appears to disappear shortly after I notice it back on my fish the next morning. I’m really confused. Thanks in advance!