Here's the deal, I am currently running a fishless cycle on a 125 gallon tank. I used pure ammonia and have gotten a nitrite spike in one day and the appearance of nitrates in two. I am going to introduce my fish when I feel it stabilized and 1ppm ammonia is eaten in 8-12 hours. I have small fish right now 4" blood parrot, 4" bala', 5" sengal, 3.5" pictus catfish, and 8 inch ropefish. I want to add 6 anostomus anostomus at the same time for they fight when kept in small groups. I was thinking that instead of adding my small amount of fish and lowering the bacteria population I created with the ammonia. I could add the group to avoid doing it after the bacteria adjusted to my small bio load. I could also put them in my 30 gallon and add one at a time while it is still running. Opinions please.