Have you seeded tank with mulm from another tank? It doesn't look like there are any denitrifying bacteria in your tank if you have ammonia and no nitrates.
I have found daily 100% water changes for 1 week are the best way to get Aquasoil ready for new inhabitants
I did use some of the filter media from my old tank. I'm thinking I should have found a way to use more.
I also had the entire surface covered with frogbit until yesterday, so maybe they had been sucking up all the nitrates.
I have read such conflicting things about water changes during cycling Amazonia. I have read do it daily, and then I've read that all you are doing is wasting the buffering capacity...