He he he, i had the same problem with a 10g i cycled. I added way to much ammonia but seeded and did it all right. So maybe you OD'ed NH4, so do a couple water changes and keep your ammonia at 2-3 ppm. And put more in every 3 days not every day. Also if youd like just use say 8 zebra danios, i got 8 and i used them to cycle one of my 10g and now im ready to put them in another to cycle it. Great hardy fish if your looking, but dont give up on the fishless unless your real desperate it does work if done correctly.
- depthC