Join Date: Jul 2010
Location: Orange County, CA
The cheapest way to fix it is to put a metal (or wood, plastic, etc...) rod on each side that prevents it from bowing. I don't really care if it bows, as this isn't a show tank. Another way would be to install a glass pane on each side to hold it.
I only have 1 betta left, but he's a cool blue marble!