The Puffer Forum

I'm not completely sure... After you start seeing nitrite, you're supposed to cut the ammonia in 1/2.

Where do you think I should go from here? Are there any ways for me to know if the tank has cycled?

Here's a couple pics of my pre-puffer tank

That's really beautiful but I'd remove those larger rocks you have on your substrate. You will find it very difficult to keep your substrate clean & will find a lot of food caught in there. If you already have the otos in there, I guess it's too late to check ammonia loads on the system. Keep a close eye on the parameters & add new fish slowly.