Two weeks ago I put root tabs in my aquarium to help plants growth. About three days later my nitrite spiked to 5 ppm. Then two days ago I did a water test and found my ammonia was up to 1 ppm. I don`t know whats happening I only have three fish! I have been doing water changes every two days since my nitrite spike and it will go down to 3 ppm only to spring back up to 5 ppm. I put in ammonia remover and a phosphate and nitrite controlling fake moss ball thing. I don't know what to do!!! Please help!