So without consulting me earlier today my mother went out shipping but during her shopping trip she stopped at a pet store and wound up buying fish to out into my tank......so the problem I'm facing is my gar and catfish will be here tommorow! And now on top of the neons in the tank for cycling purposes there are now 5 Congo tetras in my tank. She doesn't want to return the. But also doesn't want them to be eaten so is it a safe call to setup a 10 gallon for her so her spur of the moment buy doesn't die as she really likes them