http://kristysweets.net/temp/tank1.jpg
i have a couple questions too. i read guppies live in temps of 70-80, my room temp is usually between 70-76, it's at 76 now, so do i really need a heater? i have one in there(not plugged in yet), but it just worries me and would rather not have one. they've survived three weeks without, but i think i read babies live in colder temps.
second question, i haven't had any luck with guppies living except for these babies. i really want them to make it cause it think they are the sweetest, but if they don't, is this a good set up for a female betta tank?