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If you want to make your fish grow faster, make your own infusoria, which is a microorganism that you can grow with a little leftover produce. Use canned or fresh vegetables, like chopped lettuce, green beans, or peas, as the base for your infusoria. Fill a 1-quart jar ¼ full with the vegetables, then pour boiling water over them until the jar is ⅓ full. When the water cools to room temperature, add aquarium water to fill the jar. Set your jar in a sunny place near a window to help the vegetables break down and create bacteria for the infusoria to eat. Wait 2 to 3 days for the infusoria to develop. You’ll know the infusoria is ready when the water clears. You can then feed your fish a few drops of infusoria twice a day. To learn how to store your infusoria, keep reading!