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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.

Knowing the type of substrate your aquarium needs

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.

Using aquarium gravel for your fish tank

Gravel is widely used for many aquariums and is preferred by many aquarists. This is because aquarium gravel is easy to acquire, easy to maintain, safe for extensive use, and does not affect the water quality. Nonetheless, regular maintenance is still necessary.

If you only have fish in your aquarium, you can use aquarium gravel since it provides an ideal environment for the growth of beneficial bacteria. You can find coarse options and finer varieties of gravel in pet stores, from 3mm to 4mm in sizes.

Colored aquarium gravel has risen in popularity especially for decorative means. It is best to choose plain gravel, however, as painted ones tend to lose their color over time. If the gravel is clear-colored, you can easily check if some rotten food particles have been left underneath.

Guide in using aquarium gravel substrate

Placing gravel into your fish tank should be done with care. As much as possible, you should aim for a depth of anywhere between 2 inches to 3 inches. If you go any deeper, this may increase the chances of your fish tank developing hydrogen sulfite, or the so-called rotten egg smell, because of trapped food.

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 enthusiast 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 innovative and unique aquarium lights to change the themes of each of his tanks, including changing aquarium substrate compounds.