If it was me I'd ditch all testing, add any common cycling bottle bac someone wants, add two pinches of ground up flake food, wait ten days for this mix to stew among piled reef rocks in a display setup and it would be cycled
And if the bottle bac purchased was half dead due to storage error
Ten days wait plus degrading feed always shows decent ammonia control adhered to surfaces after a water change per any cycling chart.
For the ability to carry two clownfish, we have room to vary some of the initial setup it's a low load
One or two clownfish and a lysmata shrimp which is very sensitive and where surviving does indicate decent water quality is an easy bioload to manage and plenty good start for any new reef.
This notion of must add 2 ppm must add 4ppm nope I could get there with ten days wait, a stewing heated circulating flake food fed Dr. Tims cycling bac reef
It'll carry the bioload we want legit. It would do it on day one, day ten after blasting in protein to rot for over a week is the world's greatest gift to suspended water bacteria from any clade
I would literally trade gladly ten days wait for the peace of mind of no back and forth no worry no failed start date exact planning go date