How much substrate for my 29gallon
I just bought an Aqueon 29gallon during Petco's $/gallon sale and I'm wondering how much substrate I need. I want to use ADA Aquasoil. I understand they're sold in 3 and 9 liter bags. I'm thinking two 9 liter bags would be enough but I want to make sure. Also, where's the best place online to get Aquasoil? Thanks in advance!