[caption id="attachment_2917" align="alignnone" width="300"] Substrate is just the material that lines the bottom of the tank.[/caption]
Substrate
This is just the gravel that lines the bottom of the aquarium. You will need about one pound of gravel for every gallon of water in the tank.
You May Also Like:
Related Search Topics (Ads):
Having a freshwater aquarium is becoming very common. With the right supplies and resources, you can easily bring some fishy friends into your family.