My children and I brought home two tadpoles the other day. We're housing them in a 7 gallon aquarium with filtration. They're pretty small, no legs yet. They've ignored the bugs in the water, and we've tried feeding them different foods - frozen baby brine shrimp, freeze dried blood worms, fish flakes, sinking algae wafers... they like they algae wafers best. At what point will they turn more carnivorous? Any other feeding suggestions? Also, at what point should I make dry land accessible to them?