Pebbles are not suitable for most beginner tanks, however, because algae growth and debris buildup tend to be more of a problem with this substrate. Pebbles: Larger than gravel, pebbles are sometimes used as a substrate in big fish tanks. Sand is the best choice if you plan on keeping eels or knifefish, both of which like to burrow, but it is well suited to most other species of fish as well. It comes in many colors, including natural. Sand: Sand is another popular choice, especially in saltwater aquariums. This is an excellent choice for any aquarium. Fish tank gravel is coarser than sand but much finer than pebbles.
Gravel: The most popular type of aquarium substrate is fish tank gravel, which comes in a huge array of colors from natural to neon. It’s a feeding spot for bottom-feeder species, including catfish and loaches.It resembles the natural environment of the fish and so reduces stress.It provides a large surface area for the beneficial bacteria that maintain water balance.It holds onto fish waste and other grunge so it doesn’t swirl around the tank.Substrate is important for several reasons: As a general rule of thumb, the substrate should be around 2 inches deep. The aquarium’s substrate is the substance that covers the bottom of the tank. The basic categories of aquarium decorations include substrate, background, plants (either faux or real), natural objects, and fanciful decorations, which are often of particular appeal to children, although many adults like them as well. As you’ll quickly discover when browsing the choices at your favorite pet supply retailer, there are tank decorations to suit just about everyone. That means you’re free to decorate the aquarium in whatever style most pleases you. Luckily, while your fish appreciate tank décor that accommodates their natural instinct to hide when stressed, they aren’t much concerned with the actual appearance of that décor.
Along with adding beauty to your home, looking at a fish tank can help you relax and unwind.
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