I don't understand how someone can say bubblers grow plants faster than NFT, and then ask what NFT is? But I do think there might be a problem doing it this way, if you veg in bubblers too long the root system gets huge and if you're using rain gutters or pvc tubing in NFT, I don't know if you'll be able to cram those roots into the system. I think bubblers are better for growing smaller numbers of larger plants and nft is probably better for larger numbers of smaller plants. But it depends on how your NFT is set up.