this is a neat way to view it:
of all the included measures, nitrate is the only one you need from start to finish
specifically, we dont need api ammonia and nitrite to cycle. we have endless rolls of cycles fixed in spite of the readings, that doesnt make the readings required at all. so if you want to measure nitrate, then buy the saltwater version but if you want to save just buy the nitrate test kit.
to cycle without testing
add bottle bac, you're cycled. I've never seen an example of a failed bottle bac cycle and when we see one in a reef tank post, advice w be adapted