
Fix the water quality in your main tank and your fish wont get ich in the future
i have two emperor 400 that will go well with your 20 gal qt tank...
...an over sized U.V strilizer can kill the free flouting ick if instaled properly.
Well, that's the problem with them. I do use one and still have had outbreaks of ick that led to deaths of fish. The issue is how to make them as effective as they have the potential to be and still want to use one. There are severe limitations on that. The fact is that the slower the water passes through the UV-sterilizer, the more effective it will be. Still, a parasite has to pass through the UV-sterilizer in order to be killed and that's one of the significant limitations. In a reef with all of the substrate and rock, some will never pass through the UV-sterilizer before it gets to a fish/host to infect it. Another thing to remember is that if you have your sterilizer plumbed down in a sump, it's even less likely that the parasite will ever make it down there to be brought through the sterilizer to be killed. So, it's a good idea to have the powerhead or water pump that drives a UV-sterilizer in the display tank...but...that's not too nice to look at and that's why they're almost always down in the sump. I guess the bottom line, IMO, is that it isn't a bad idea to have a UV-sterilizer, but don't count on it to be sure thing...or even a probable thing.


Another thought...or my experiences, anyway. I find that ick isn't generally a very serious problem in an established reef tank as it is in a FO or even a FOWLR. I've had a series of outbreaks of ick in my FOWLR (on which I do have a UV-sterilizer) and each time it led to serious losses. On the other hand in my reef, when fish do show any signs of ick, it passes completely in a day or two without any lossesand with no treatment at all. I've been doing this for over six years so I think that the pattern is fairly clear because I do maintain the same good water quality measures in both of these tanks. I am inclined to conclude that the coral actually consume the ick in the free-swimming stage and so they can't proliferate in the same measure as they do in the FO. I don't know if this is a matter of fact, or not. It may just be a factor of fish being generally less stressed in an established reef. Still, I would think that the coral have something to do with it since I have a good measure of live rock in my FOWLR. On yet the other hand (That's three hands now, isn't it?) people do get ick outbreaks that are serious in reef tanks....so, I would recommend what I've now concluded (after learning some hard lessons) and that is....quarantine and do it seriously.
Well we can all put in our 2 cents about causes and cures the same way we talk about the common cold there is no snake oil out there to wipe out ick.You can have polluted water and the fish gets used to it or die from something else besides ick.We can just try our best to keep our animals alive and happy or leave them in the stores or in the oceans.
