Only concern yourself with the NH3
test results. NH4
means nothing in SW
as long as the pH remains above 7.8
As far as this being a normal reading after one day, I'd say no unless you have something in there other than the dry base rock. Did you add any LFS
rock, live sand or had the tank been set up for any time before the shrimp was added? You really shouldn't see an ammonia reading for a few days at least otherwise.