it is easy to predict cycle completion dates using only a general description of the approach. testing isn't needed. this is how they align reef tank conventions to all start on the same date; buyers use different cycling rules than sellers use. sellers get instant skip cycles, or predetermined start dates for dry start systems so that they're not waiting out in the parking lot 30-60 days for cycle completion, like the buyers are trained to do.
giving the buyers the seller's information is a new thing in reefing, that used to be unspoken info. if buyers think they have to buy repeat products to close out a cycle, plus test kits, that helps the sellers
showing buyers how to count # of days to cycle closure removes wasted $ given to sellers in the hobby, so it's good science.
we can use # of days wait as the count to cycle completion (on what date does ammonia drop on a common cycling chart? day 10-12 on them all) vs testing for parameters.
