, I'd say this sounds like a territorial thing in the making. From what I've read, one should be in at least a 300g tank (preferably 400) and I couldn't imagine having 2. A standard 220 is about 72Lx24w if I remember correctly and I think too small for an animal that size once it reaches full growth. I'd seriously bring it back and ponder other options. Just my .02.
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