In order to raise tadpoles, you'll need a suitable container, like an aquarium, fishbowl, or garden pond. Be sure it has good shade - about 3/4 shade is ideal.
Tadpoles absolutely depend on having fresh, clean water.
Chlorine is deadly to tadpoles! If using tap water, let it stand exposed to full sunlight for 5 to 7 days. This will allow the Chlorine to be removed by evaporation.
If you don't have that much time, you can buy de-chlorinating drops at your local fish-carrying pet store.
What do tadpoles eat?
frog and toad tadpoles are vegetarians, (unlike the tadpoles of newts and salamanders), and are very easy to feed. they love lettuce! you can boil the lettuce for 10 to 15 minutes, drain it, and keep it in a baggie in the freezer. Give the tadpoles a pinch every few days. you can also give them water reptiles food sometimes, but not instead of lettuce!
don't forget, too much food will get the water all dirty. however, tadpoles of some toads and frogs can morph from placid plant eaters to fierce cannibals if their pools threaten to run dry or if food is scarce. By becoming meat eaters that snack on other tadpoles, the cannibals speed up their development, hoping to transform into toads before the water or food run out. so be sure to feed them enough!
If your water gets dirty really fast, slow down on the feeding, and be sure to replace the dirty water with some fresh spare water.