I am setting up 4 or 5 10 gallon tanks and want to run c02 and add plants in the tanks. I purchased fluval stratum, eco complete, sand, and Walstad method of sand, dirt, and gravel/dirt. I am setting up planted neo tanks and want to run c02 and need somewhat cheap options for lights and c02 options. I am fine with injecting c02 from a can and just filling something up but would rather not purchase 2 c02 tanks.