<a href=showthread.php?s=&postid=15198478#post15198478 target=_blank>Originally posted</a> by 1geo
Some scaleless species will not tolerate Formalin at any dose. This is a quote from a book see http://books.google.com/books?id=bt...X&oi=book_result&ct=result&resnum=5#PPA122,M1
Why not split your fish into 2 10 gal tanks. I know of no rule that you can not treat 2 or 3 fish at a time especially if they are small.
Putting formalin directly into the QT tank will kill any swimmers in the tank but will not cure your fish. The only effective way is the baths. Remember, formalin does not accumulate; after 2 hours the water is theoretically reef safe. The same would happen in the QT tank. Any swimmers in the water would die but not those embedded in the fish and on their gills. For that you need the stronger solution of the bath. If you have access to PetSmart, they have a 2.5 gal tank. you could move 2 gals of water from your 10 gal QT tank and use 2 cc of Formalin in the 2 gals for a bath. you should be able to put 4 fish at a time in this tank. Just make sure you keep a close eye on them for extreme stress and mix up a new batch of water and formalin before the next bath. There is a product put out by FishVet called Revive. If you use it on your main tank it will kill all of the Brook swimmers in the tank without harming your other creatures. So if its definitely Brook Revive will eliminate it from the main tank. If your fish have Ich, this will not work because Ich has an egg stage and Revive will only kill the swimmers. Just a though. As to the salinity, unless you know what you are doing and have a refractometer to measure the exact SG you are playing with fire. I would slowly raise the salinity back to where it should be and depend on the Formalin to cure your fish. Fresh water baths may give them relief but 2 days is a long time when you have Brooklynella. Good luck, 1geo
Wow! Again, thanks everyone for the input! This has been a very informative thread and a great community of knowledge!
After the initial shock of the severity of the situation I buckled down and ironed out a plan. I purchased a 20 gal long (might use it as a future frag tank

), purchased some ceiling egg crate, and some white "veil" meshing from a hobby store to make a giant net of sorts and a tank top. After getting home and attempting to just catch a fish (any fish) I realized it's not going to be an easy task. I'm still not sure how I'm going to get them out of the DT, but I plan on making a big net to basically sit on the bottom of the 20g tank and when I need to remove the fish, I can just gradually raise the net (it will have sides as well) and scoop the fish out much easier with specimen cup.
I will do the formalin bath as suggestion and probably do it in batches of 3 fish while making of new batch of formalin solution for each bath. I will gradually bring the salinity back up for the one clown and keep it at 1.023sg for the 20g tank. I do have a refractometer so I will be able to accurately measure things. Since I have a few 5 gal buckets, the bath will be done in there with an airstone keeping things aerated.
I found the “Revive" by FishVet and will purchase that as well to treat the display tank.
Basically, as long as my fish can hold out for a couple more days I think we are on the right track! My purple firefish was not looking to healthy today when I got home from work but as soon as I got the net in there he took off towards the rocks. I was a bit overwhelmed and decided to attempt catching all the fish tomorrow. If anyone has any suggestions to catch all my fish I would really appreciate it. A net immediately scares them into the rockwork and I have a bad feeling I'm going to have to tear my entire reef apart to get them…
Thanks again everyone for your help! It's been a community effort and I can't thank you enough.
I'll try to take some pics as soon as I make some progress on the 20g.