Tropical Fish Tank Gravel Or Sand. They may cause the water to become too cloudy by disturbing the sand, which can you use sand in a tropical freshwater fish tank? Plants do best in gravel (gives them something to root to), and bottom dwelling fish need sand or smooth gravel.
Aquarium gravel & sand come in different sizes and colours. Sand has some disadvantages as well. I have gravel in my quarantine tank, which is.
Is gravel or sand best for an aquarium?
Aquarium gravel & sand come in different sizes and colours. I find sand to be an ideal substrate and both natural appearing and clean. Buy sand from companies that specilise in aquarium substrates. Fish waste will either float around to be picked up by the filter, or collect in certain low flow areas where it can be quickly and easily syphoned out.