Stalled cycle

[beglely]

Been cycling my 55g for over a month now, and my cycle is whack. I seeded the tank to begin with and showed high ammonia, mild nitrites (0-.5ppm) and low nitrates. After a few days every test was high. After around 2 to 3 weeks ammonia started to drop from around 8ppm to 1ppm until it spiked again with no change in the other levels. This remained for a week or so until the last few days where my nitrites have plummeted to 0. This would be great except right now my ammonia is at 8ppm and nitrates at almost 80ppm. I havent been doing water changes because of the cycle. This is a planted tank and ive been injecting DIYc02 during the process. I have also read that low pH levels can kill the necessary bacteria in a cycle, and this could be my case as my pH is 6.0. Ive been testing a bucket of water with my rainbow rock from my 20g in it to see if it raises the pH (it does as the pH has risen .6 in the last week) so I might move all my rainbow rock to the 55g permanently if this can help correct my cycle. I also forgot to mention that as of 2 days ago ive now got green water in this tank. Suggestions on how to get things back in order?? All my other tanks cycled fine except this one.
edit*:forgot to mention that I only brought up greenwater because maybe it can explain why my cycle is wierd. Ive fixed green water algae before so thats nbd