I started my tank about 2 months ago. About the end of April, I added plants and my ph suddenly dropped and I have been stuck with a ph of 6.4-6.6 from 7.6 for almost a month now. I am unsure if my cycle is still in process but my ammonia is dropping, not every 24 hours but eventually drops to 0. Although, I do not see any nitrites. Before the ph drop, my nitrites were the problem and were only dropping in 48 hours. My ammonia is no longer dropping in 24 hours, with no signs of nitrites, and my ph has drastically dropped. This is all overwhelming and stressful and I really do not know what to do anymore.