One thing you will learn as you gain experience, is to take "anything" a LFS employee tells you, with a grain of salt.
If your water testing shows 0.00 ppm ammonia, 0,00 ppm nitrite, and some detectable (less toxic) nitrate, it means your tank is cycled, and it also means the ceramic rings are now colonized (they both mean the same thing, its just semantics).
If starting from scratch, it normally takes 6-8 weeks to cycle a new tank (that is, to have the media colonized with enough bacteria to consume the ammonia and nitrite, the number of fish in the tank, and what waste they put out) but each tank is an individual entity, some take longer depends on the number, size and type fish(some are messier than others (gold fish are some of those later type).
I squeeze out mechanical media either, every day, or every other day. Some people might consider that anal.
But whenever (less toxic) nitrate reaches between 5-10 ppm in my tanks, I also do partial water changes dilute it.
If your water testing shows 0.00 ppm ammonia, 0,00 ppm nitrite, and some detectable (less toxic) nitrate, it means your tank is cycled, and it also means the ceramic rings are now colonized (they both mean the same thing, its just semantics).
If starting from scratch, it normally takes 6-8 weeks to cycle a new tank (that is, to have the media colonized with enough bacteria to consume the ammonia and nitrite, the number of fish in the tank, and what waste they put out) but each tank is an individual entity, some take longer depends on the number, size and type fish(some are messier than others (gold fish are some of those later type).
I squeeze out mechanical media either, every day, or every other day. Some people might consider that anal.
But whenever (less toxic) nitrate reaches between 5-10 ppm in my tanks, I also do partial water changes dilute it.