ive been running my125 for over 2 years now and i first let it run for 1 month before i added 3 blue damsels and a Domino, the nlet it run with them for a few weeks before i added my live rock (which ive been adding to ever so often). Then i started to stock the tank with my yellow tang ,1/2 black angel and green chromis. I then added this cute little snowflake eel and then he got bigger andf bigger as my fish numbers diminished. He even ate the tang! The 1/2 black is doing fine though. im moving my tank in August into my living roon where i remodeled the room for the tank to be enclosed into the wall, hopefully when i do this, ill have my 55 running for the eel as i want to restock the tank soon. Thios is how long i waited to cycle my tank, but im a patient person