If you are reading strictly ammonia only i would say your tank may have never actually finfished cycling probably due to the water changes...
Best bet as mentioned is to get some established filter media from a healthy tank at the LFS or a friend and throw it into your tanks filters to let it kick start your filters beneficial bacteria, coz at this rate you may end up doing more harm than good...
Well I dont have any friends here lol, I just moved from miami to Kentucky. But I will contact my loval shop and see if there is anything they can do for me .
