I was up early today unexpectedly. I tested Lincoln's water and Nitrites were down to 1-2ppm (vs 2ppm yesterday) and Nitrates were about 30ppm, a big improvement especially on the nitrates (which makes sense with 2 water changes).
I did another 30% water change and added some more Seed, although I am not too impressed with it.
I also added some ceramic bio media in a mesh filter bag into the filter chamber. I was planning on doing this earlier, but I just got the bags recently.
I'll keep everyone posted, but Lincoln appears to be weathering the storm fine and I imagine within a week, everything will be where it should be (nitrates only).