Having an aquarium means knowing which fish tank type and size is best, which filters to go for, which fish species to take care of, and which aquarium substrates to use. One of the most important decisions you have to make is choosing the right substrate according to the type of fish tank you have. Many hobbyists actually prefer aquarium gravel.

Which substrate types does your aquarium require?

Different types of aquariums require different types of substrates. For fish-only aquariums, tropical fish tanks and planted aquariums, aquarium gravel may be suitable. However, gravel is not ideal for marine tanks, since marine environments require higher PH levels. Aragonite and crushed corals are better suited to marine and reef aquariums.

The importance of aquarium substrate

Some people prefer having a plain glass bottom for their fish tanks. But if you want a more natural look, adding the right substrate can improve the look of your tank successfully. The substrate also protects your fish from the irritating glare of the aquarium lights, especially when reflected from the glass bottom.

Aquarium gravel use and maintenance

Many aquarium owners prefer using gravel since this is one of most commonly used fish tank substrate nowadays. You can find gravel in most aquarium and pet stores. Also, gravel does not require heavy maintenance, although you will still need to check them regularly for any trapped food or other impurities.

Aquarium gravel is ideal for fish only aquariums, as they provide an excellent environment for beneficial bacteria to thrive. Many aquarium shops sell gravel in coarse and fine varieties, and in different sizes from 3 mm to 4mm.

If you want to add more spice into your fish tank, you may also go for colored gravel. Nonetheless, painted gravel may lose color eventually. If you use colored gravel, it may difficult for you to recognize if any food particles have been trapped in-between the rocks.

Guide in using aquarium gravel substrate

Make sure that you maintain the ideal height or depth when placing gravel in your fish tank. Two inches to three inches is enough, since a depth of more than three inches may increase the appearance of hydrogen sulfite due to rotten food particles and other impurities.

Fine gravel is more ideal for bottom dwellers or bottom feeders. If you have a planted aquarium, you will need to use a nutrient-rich layer as the base. Gravel may be used for the upper layer. For fish tanks with crustaceans such as crabs, aquarium gravel is also recommended.

Sean Kerring is an aquarium expert and breeder who has been wirking with and raising fish for over twenty years, when his parents gave him his very first fish tanks. He always uses new and changingly colored aquarium lights to change the themes of each of his tanks, including changing aquarium substrate materials.