I think I have Betta-specific MTS.
I can't stop myself from buying anything which I think is a good price, that I could fit a betta into. I don't see why I feel the need to do this, I always adamantly declare that I refuse to own more than two bettas at a time (I know my own limitations as far as fishy responsibility goes, is all I'm saying... anything more than 2, and I'm not a good owner anymore).
Just last night, I was sooo tempted to buy a 2.5 minibow from petco.com, because I have a coupon that'd give me an additional discount. I also almost bought a 5.6g Herp Haven Breeder Box there, as well, because of the same reason. And then I thought, "But wait!.... what the bleep am I doing?
My bettas are in actual tanks now, I don't need to keep on collecting containers, bowls, and junk for them!"
Maybe I'm anticipating a sudden onset of betta-collector-itis?