Advertisement So I'm new to the hobby and just curious how much the 'you can't just have one' thing seems to hold true. Right now I've only got one.... and yet I snagged a second tank claiming it would be a good 'backup' container in case anything happened to my main cage. Yet I can't stop thinking about how well another T would do in it... I've already got the substrate.... I've only had my first T for two days.