Ok, your nitrites are high, so you need to work on bringing those down with water changes. Begin with 25% water changes both in the morning and in the evening. You also really need to get your water tested, since your tank is definately still cycling. That coudl be part of the problem. Add 1 tablespoon of aquarium salt to the tank, as this will reduce the nitrite toxicity. (add back 1/4 table spoon after every 25% water change until this is resolved).
How warm is your tank?