I second the getting the croc in a larger cage. A 55 gallong is tiny, especially if its a standard fish 55 gallon. They are only 12 inches wide and 4 feet long if im not mistaken. Many people wouldnt even keep a beardie in that enclosure. I know you are trying to quarantine, but the idea of quarantine is a simple enclosure. The enclosure must still meet the herps requirements, it just doesnt give them the extra bonus stuff that a normal cage should give them. Quarantine is usually around 1-2 months. Think of how much he will grow in that time. If he has a growth spurt he could put on maybe six inches in length and if he is already skinny, he could double his weight. That 55 gallon should only be a very temporary thing. Id start looking for something much larger. Maybe something along the lines of 180 gallon at least for the quarantine process. As for him reguritating, it may be a plethora of things. Temps, enclosure size, stress, parasites, etc. If he is not eating well, the panacur could have a very ill effect on him. Meds like panacur can actually lessen the appetite of your herp. It also kills alot of the stomach flora which is essential in digestion, so be sure not to over do it. Treating at the right time is essential. Too early and you could cause more stress, lessen the immune system response, curb his appetite, kill too much flora and essentially make it worse. But wait too long and the parasites might just take over. Just be careful with all the meds. Being hit with all sorts of meds to take care of the endoparasites and ectoparasites may cause him to completely stop eating. I would consult of good herp vet before doing too much. Its not easy for a wc animal to come into captivity sometimes. And the tiny enclosure isnt helping.
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