Preparation materials:
Straws, beverage bottles, nails, pliers
The specific steps are as follows:
1. Clean the plastic bottles , and control dry moisture.
2. Clamp the cap of the nail with pliers, bake the nail on the stove, and heat the nail to a certain temperature.
3. After the nail reaches a certain temperature, immediately insert it into the middle of the bottle cap and pass through the bottle cap.
4. Pull out the nail and insert the straw into the bottle cap, and the water changer is ready.
5. Turn the water absorber upside down and insert it into the fish tank, and it's done.