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Sprout & Fin · Worksheet
Lesson 21 · Grades 4–8

Keeping the balance: feeding, pH, temperature

Name Date

Label the picture. Write the name next to each letter.

  • A · plants
  • B · fish
  • C · bacteria (the crew)
  • D · meeting point

Answer in your own words.

  1. You feed the fish much more than they can eat. What happens?

  2. Why do aquaponics systems run at a higher pH than hydroponics?

  3. The fish are calm, but the plants look hungry. What could help?

Draw or explain

Think of something you keep in balance, like a fish bowl, a pet's food, or your own sleep. What happens when it tips one way?