How do you measure the pH of a fish tank?

1) Use a pH test kit:

- Collect a water sample from the fish tank.

- Dip the pH test strip into the water sample for the specified amount of time.

- Compare the color of the strip to the color chart provided with the test kit.

- The color of the strip will correspond to a specific pH level.

2) Use a pH meter:

- Calibrate the pH meter according to the manufacturer's instructions.

- Collect a water sample from the fish tank.

- Submerge the pH meter probe into the water sample.

- The pH meter will display the pH level of the water.