Things You'll Need
- Sterile potting soil
- 20-gallon fish tank
- Sterile sand
- Lukewarm water
- Aquarium heater
- 25-watt fluorescent bulb
Instructions
Place a 1 1/2-inch layer of sterile potting soil in the bottom of a 20-gallon fish tank. Cover the potting soil with a 1 1/2-inch layer of sterile sand.
Fill the tank with lukewarm water. Pour the water in slowly so you do not stir up the substrate (soil and sand) at the bottom of the tank.
Allow the water to stand for at least 24 hours. The waiting period will give chlorine and other impurities in the water time to dissipate before adding the plants.
Maintain a constant water temperature between 60 and 80 degrees Fahrenheit. Use an aquarium heater if necessary.
Remove approximately 1 inch of foliage from the bottom of each of the elodea plants. Bury the elodea in the substrate, keeping all of the foliage above the sand level.
Provide the elodea with at least 12 to 16 hours of light per day. A 25-watt fluorescent bulb in the hood of the tank should suffice.