Originally Posted by Hallyx
Sometimes it takes a while for the nitrite oxidizing bacteria to take hold and start working. But when they do, it can happen really fast.
After I got home that night I added half a cocktail shrimp (which is still in there now). Because a whole one brought on 4ppm ammonia, I thought I'd just do half to get the 2ppm as recommended. 24 hours later the nitrites went up to 0.25, but the ammonia barely raised. And I mean like the ammonia was more than zero but less than 0.25. lol
After that I checked every 12 hours. Since that little spike it's been zeros all around. (Nitrate levels definitely say I need a water change though. lol)
Is it safe to assume my tank is cycled? Or should I have added a whole shrimp to really get an ammonia kick?