I moved about four months ago and it took 6-8 weeks until I had issues. I kept my water as the move was just across town. I use an RO
for my water but I lost my shrimp, urchin and starfish within a few days. I was able to keep the eel alive as well as the hermit crabs and a few snails.
Oddly enough, the move across 4 states was smoother than across town...
I hope you can stabilize the tank! Good luck.