I feel like you are overstocked but I cannot "see" it. That is one to reduce your ammonia, reduce your stock. Or you can add more plants to use some of that ammonia. Anubias and Amazon swords are great. Also, if you don't like the blackwater effect of the driftwood (your tank water's yellowish), you can add activated carbon into your tank. Somewhere you can remove it so it does not leach back the adsorbed chemicals. You can remove the chemicals from the carbon and reactivate it by putting it in boiling water.