r/kratky

I started a bunch of lettuce last month, kratky (1 and 2 litter setups), NFT, Soil in larger pot (1 litter) and small (4 cubic inches). The kratky method is the slowest glowing plants of all in my garden shelf. I am using 20-20-20 fertilizer for everything. Most are under lights, some are in a window, and my outside ones are not in this comparison.

Should the kratky grow faster than my results or is this the way of it?