If you're new to aquariums, you may have heard the term 'substrate' mentioned in some of the articles you’ve read. What this term refers to is the substance that covers the bottom of an aquarium. It can be anything from gravel to potting soil, but it's one of the most important choices you can make when setting up your aquarium. Before choosing a substrate, you first have to … [Read more...] about How to Choose an Aquarium Substrate