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What Are the Best Substrates for an Aquarium?
Substrate is the third-most important decision an aquarium owner can make (and also one of the most essential fish tank supplies), right after deciding which fish to fill it with and what size aquarium to buy. While gravel is one particular type of substrate, it’s not the only kind. This brief guide will go over several substrate materials and clarify their features and which aquariums they’re best for. Gravel This most common of freshwater aquarium substrate materials comes in both fine and coarse styles. Gravel is common because it’s a safe and pH-neutral material. It’s best used in fish-only aquariums and as the top layer of a plant aquarium’s substrate. …