somebody has to say it
xanths dont take well to having their situation changed on them. it is wise to have cage, cage furniture, lights, plants watering, and temps, and a basic understanding of their care requirements all in place before you get any chameleon. you didnt say how old this cham will be, but a 20g aquarium, is not a suitable housing for an adult jackson's, not even for a few days, i understand you are anxious to get your cham, but wouldnt it make more sense to take an extra week and get him off to a better start? just for the record, xanths are not usually recomended as starter species, and are unlikely to survive a learn as you go/trial & error approach, sorry to burst your bubble, but it is better you learn it now, than after your cham is on the floor of your cage. jmo