also, the surfaces in this aquarium had enough bacteria by 10 days ago, duration cycling with any form of boost (which you had) is 30 days it works all the time if you have normal amnts of surface area in the tank like rock/sand etc. unboosted dry substrate cycles take longer (where they were only hydrated and left to contamination elements to proceed)
your leftover water and its metabolites may or may not test accurately to show a completed cycle, but there is still a final step for you to know if its stalled and it wont be:
add ammonium chloride up to about 1 ppm no more into the tank
if your ammonia test kit registers 1 ppm approx., and then in 24 hours it has moved down at all, zero not required, you are cycled as predicted.
do a massive water change, add some starter corals and clean up crews. set
if you don't have AC or want to mess with it, going off other threads that already did we can still call your cycle completed, not stalled. you've got to re challenge ammonia to truly tell, but that's not required. the reason I only use ammonia in my cycling threads as the complete and total assessment is due to what Randy said above. nitrate tuning is for algae control, when ammonia disappears over time in a system meeting surface area and submersion minimums there is always nitrate produced, whether or not we detect it ranges so I don't use anything but ammonia and duration in my cycling threads. you mentioned some neat details in the first post that made me think its done, not stalled.
