Well what do you suggest for for the stock above? With what you said I'd add the pleco and 10 tetras then 3 months later another 10 tetras? Can I add them all at once if I cycle it up to like 6 or 8ppm in 24hrs?
Not quite, in your case I would add the bulk in say two weeks but to say 75% of intended. So say 25% first weekend, 50% second weekend. Timing would depend on how first fish go. Then see how it looks in 3-6 mths. That's easier for me as I like schools of different fish. At 4ppm dosing you could add all at once.
My reason for a 25% start is really to see if the store is good. If I lose one that is ok, if I lose most then either the tank or the store has a problem.
My neon tetras I added last as my water isn't really suited for them naturally, the store actually gave me 5 more but all did ok. By then the tank had been going for 9 months.