Sand & Gravel
![Sand & Gravel Sand & Gravel](images/Gravel & Sand Pic.jpg)
A gravel or sand substrate is very important to the health of an aquarium.
It helps to prevent food, fecal matter, and other debris from freely floating around in a tank.
This can means less frequent water changes
A gravel or sand substrate is very important to the health of an aquarium.
It helps to prevent food, fecal matter, and other debris from freely floating around in a tank.
This can means less frequent water changes