Any ideas on what may be causing ammonia issue?

[BusbyFish]

Just moved a 275 gallon tank. Established 1 year. Had about 100 lbs of live rock. Several leathers, frogspan, brain coral and some smaller pieces. Also 3 urchins, that have lost all quills and are now quarantined. Sea star lost legs and died. Clowns, cardinal, chromis, gobies, naso and yellow tang, all fine. Several snails, cleaner shrimp, hermit crabs seem fine also. We moved this tank about 4 hours away. But the tear down and set up took nearly 16 hours. Took about 100 gallons of established tank water and all the rock, sand, coral etcetera. Problem is ammonia was fine and only started to show today. Tank Has Been Up now for a week. Think maybe the corals may be what's making the levels rise, or maybe the rock. It was a long drive and just needing some thoughts on what to look for if corals are dying or coraline algae on rocks is dying.

 

[Tahoe61]

There was probably some die off on and within the rocks.

Sounds like water changes are in order.

If you're using an ATI kit then you need to recheck that values as well.

What is the ammonia value?

Do you have any Prime?

 

[BusbyFish]

Ammonia was at.5. Used ammo lock, went to 1. Then used ammolock went to 2. Now reading .5 but thinking it may be a false reading due to the ammolock. 20% water change done yesterday.