Many of the products Top Aquarium has links to are affiliate links to Amazon.com as well as Chewy.com. Top Aquarium does make a small amount of commission when you purchase from amazon and a $15 commission when you are a new customer with Chewy. Regardless of any commission we receive, we have chosen products that we feel are of great value and stand in line with Top rated aquarium products that have been tried and tested personally. We appreciate you using the links but feel free to do your own research and purchase elsewhere if you are not comfortable with affiliate links.