It's a thought but I can only think of one instance where it might be beneficial ... that would be in a vegging tent where you wanted to get as many seedlings as possible under the light ... once the foliage starts to outgrow the pot diameter you would have to spread them apart to keep from crowding them ... at that point you could plant them, air pot and all, in a 4-5 gal pot and achieve amazing results ... but you'd need floor space or have to move them outside ... if that's your goal it would be easier to just use 1 gal air pots ...