I stopped in Petsmart to get some jerky turkey for my dogs and spotted Bettas in specimen jars in blue water. Now is this food coloring or medication? No one seemed to know. The jars only hold 6 ounces of water. Anyway i ended up rescuing one and am thinking of putting him in my community tank [100 gal]. Anyone have any luck with this or should i scrub out a 5 gal hex i have in the attic?