I see so much wasted space throughout this site it almost makes me feel ill. Why are people buying 2 gallon containers then only vegging for 4 weeks? What's the point? A whole gallon of wasted space.

In soil, now this is cold hard truth, if you veg' for 4 weeks you are looking at around an oz per plant, maybe a little more, maybe a LOT less. This should be the same yield whether you use a 1 gallon or 2 gallon container. In a 1 gallon container you're fine for up to 6 weeks of veg' (maybe longer) from seed. From clones 4 weeks is about it in a 1 gallon.

If you only intend to veg' for 4 weeks buy 1 gallon containers.