material from another tank would have the same thing as the bottles of bacteria...
+1, in 20 years of primarily focusing on planted tanks, if you tend the plants, they come in loaded with bacteria and also remove NH4, so there's no cycle, a so called silent cycle occurs, there's no NH4.
Hard to have a cycle without NH4.
Most do frequent large water changes anyhow the 1st 1-2 months, 2-3x a week, 50-80% etc.
No NH4 is going to build, up with that routine.
After 1-2 months, any bacteria that is around that can nitrify, is well established by then.
Live bacteria from established tanks are your best cycling product made.
Well, plants are better, you can sell them and they look good, bacteria? Not so much.
ADA has the NH4 in the soil, but this quickly is taken care with lots of plants and the standard large frequent water changes till the plants take over after 1-2 months.
I see no need to cycle a planted tank, no one has offered a good rational for it for in a planted tank I've seen to date. Stuff like taking basic care of the tank, doing water changes etc, adding enough plants to start with, taking care of the plants etc, those are the larger issues.
You cannot bottle patience and good care.