IF they are smart pots, How about getting a container they can sit on and bottom feed and let the soil suck up the new organic nuts from time to time with the top feed ?
The only reason I say this is because that's why I do, Because I have been to lazy to cover the carpet in the closets :( So I use Tupperware like crates that are big enough to hold the 5G smart-pots with room to bottom feed about 4 inches deep ( plus it sure is easy to slide them on plastic)