you do not need to test for ammonia or nitrite for the life of this reef tank starting now here's why
fish disease is your issue, see this thread below its how your tank is running and will run
in that much dilution, low bioload you do not need to test for ammonia at all
your test above needs something called a TAN conversion just the same to be accurate, not factoring that part is total mis contextualizing your reading
*after tan, that sample above you're testing is fine anyway, your ammonia is safe, not unsafe, per the tester.
the ammonia in this reef runs at the thousandths ppm nh3 level regardless of what that test above says...dilution, surface area, low bioload, more than ten days old I can see by details, and used biospira which is skip cycle bac:
I just started a new tank a little over a week ago. I started with all dry rock and new sand. I added a bottle of Bio-Spira and put fish and coral the same day. Never saw any ammonia and fish and coral seem healthy.
www.reef2reef.com
that thread proves you are ok, he added 6x more items on day one.
your posts from early July show benthic growths on the sand and some life forms, those only happen via import, in cycled tanks. Pics alone has cleared you cycle and in no way can you have uncontrolled ammonia, it would blot out the water and kill your animals to be running 30 days in unclean water.
early fish disease, now that's a different story. non fallow non qt is what keeps the fish disease forum busy by the minute.