I have a tank that I have been treating with Paraguard to address some unknown parasite. I'm at the point where everyone is behaving normally with no signs of being sick or stress but now I'm wondering if I need to replace the filter media and deep clean the tank to get rid of any lingering badness. I know that by replacing the filter media, it'll essentially re-cycle the tank so I want to avoid that but the last thing I want to do is get the remaining healthy fish sick. I haven't thrown the carbon back into the filter yet. So what are your normal protocols after dealing with disease/parasites? Some ideas that I'm bouncing around in my head: -Replacing filter media, taking down the tank and bleach dipping all live plants and equipment and replacing the substrate -Leaving everything as is, just doing a pretty large WC, throwing the carbon back into the filter and gravel vacuuming where I can (trying to get my DHG to carpet so have to tread carefully!) At the end of the day, my main objective is to keep my remaining fish alive and healthy ( hoping my new fry didn't contract anything!) so I will do whatever it takes! Thanks in advance for any advice!