Hello, I think for me is, and currently going through it, is how a fish disease gets into my tank when I haven’t added new fish. Come to find out (now) maybe I was too narrow minded, but anything wet can introduce a fish disease. Which kinda takes the fun out since everything is suppose to be wet. It’s easy for most to say catch the fish and qt them. It’s not as easy as it sounds when you actually glued your rocks into place and the coral has grown all over them. Yet for some strange reason we have all this amazing technology, but in theory we still can not treat ick or velvet in the display tank. Not to mention (yes I run two uv steralizers), and from the get go almost 19 months into this tank and no disease. Then suddenly poof I have either ick or marine velvet. Now they both have some similar symptoms, and yes I want to treat them. Except in Boise which half a million by now, no lfs carries or sells a fish trap. Not one store carries any of the actual (in theory reef safe treatment). Yet this entire time of 18 months give or take, I have not added any fish into my system for this reason alone. Yet it’s amazing how some say you can eradicate ick etc some say you can simply control it etc. I’m curious as to why (other than copper) which isn’t reef safe)) why we still simple do not have an upper hand and or understanding exactly everything there is about ick or marine velvet etc. What does happens in the ocean? I guess it’s simikar to red tide but it’s amazing how we have not developed something that fish can digest that can repell and heal fish from these types of parasites. As I have read who knows how many pages now, it’s frustrating when there is no definitive solution. Everyone says well qt! Well all my fish were in a qt and I had zero issues for 18 months, and I haven’t added any new fish at all. (Sorry 8 months ago roughly), I added a golden head goby. What’s even worse is the few fish that I have that are aka super keen to getting diseases are the ones that so far have still no issues where as I have two mainly that show sigsns of ick. Yet speaking with some others I don’t know if it’s ick or velvet. It’s to the point I can still count the dots on the fish and they eat like crazy. But again (side note those who have helped me here and reached out as made it easier and forever in debt), if fish bans actually take affect world wide, what is one to do if this happens? It’s annoying that for example marine depot sells some reef safe ick treatment. But, they are not scientific proven to actually work. Plus I treat my fish and corals like children (as if I have kids) they mean the world to me. But it doesn’t make much sense to rip the tank down to catch the fish when it’s a 50/50 shot even if caught early. Yes there are success stories but it just kinda is not right that some have to weigh the options. Risk losing fish, try and save fish stress out more when catching, 50/50 shot they survive and if it’s velvet more like 80/20. As to let’s stress the corals also and get the sps to rtn etc or kill them off also some how by trying to save the fish. Wouldn’t life be so much better if a company actually made a reef safe that is proven to work more than 50% medication for ick and velvet and brook? I mean why stop there let’s add flukes and everything else. It’s frustrating (sorry for the vent) when yes I paid extra for my lfs to keep my fish in qt with copper. (They are reliable, I can’t blame them almost 2 years later). I added them in sections within weeks of each other and yes I use uv steralizers, I use garlic guard. I do what it takes to feed them daily and make sure they are healthy. Then suddenly there is an ick break out or worse it’s marine velvet, and the only changes is I added coral from my lfs. Which all of them have fish and corals separate, there are no fish in any of the tanks you can buy coral out of. Which makes really stumble how there was an outbreak. Since all I have done is add a few very small corals, and everything else has stayed the same. So my frustration is that we have all this technology and science to Grow coral and keep fish. Yet we still haven’t come up with something to eradicate these two parasites and or at least be able to treat them with great success in the display tank.