i think i was around 11 or 12.. my mom let me have neon tetras and chinese algae eaters and guppies. We even successfully bred guppies and had most of the babies survive..
i don't remember what happened to that tank.. i think it was a 20 gallon..
the next tank i got was the 150 gal we bought for my hubby's piranha that died before he got moved into it last year. now we've got 6 tanks up and running, and 2 the need to be up and running and we desperately need to buy another 100 gal or larger tank to set up in the next month..
i think i'm addicted.