I just signed up after years of perusing the forums. I don’t consider myself an expert, at all. I have successfully set up two tanks (one 12 gallon home / one 22 gallon work). Both are active and healthy. I do not have coral in either tank. I have live rock, two clownfish and CUC in both. The clowns are outgrowing the 12 gallon, so I purchased a 20 gallon Waterbox cube (similar in size to my mature office tank). In the new tank, I have an Ai prime, Marco rock, Carib Bimini pink sand, and mp10. I introduced pure ammonia as prescribed, as well as API quick start. I checked after one week and ammonia and nitrite was off the charts. Today, one week later (two weeks total) I have 0ppm ammonia, 0ppm nitrite and 5ppm nitrate. Is this suspiciously quick?? I haven’t had a tank “cycle” that quick, ever. Given that I’ve only set up two tanks, I’m hesitant with this one. Should I add table shrimp and check parameters again in a week?