I've heard that plants make cycling longer (with the absorption of Nitrates - no way to tell when finished).
True? False?
True? False?
Plants actually reduce the amount of time needed to cycle a tank.
While it's true that plants do absorb nitrates, unless you have a high tech tank with a lot of plants, nitrates won't become undectable.
... If you use enough plants (lots of them) initially, they will absorb enough NH3 and NO2 to keep them from harming a modest fishy bioload while your bacterial colonies get established. It will still take at least a couple of weeks for them to get established and if you have some plant blight ("I had no idea the goldfish would eat Elodea...") before the bacteria are established, you will see a NO2 spike that can cause problems if left unattended.