I noticed on my latest soil test that my phosphorus levels were very high. I did some research and saw where Milorganite can lead to high Phosphorus and high P can lead to iron being locked up in soil. So, I'm going to stop milorganite for a while. 1. Is there anything to bring P levels down. 2. How long should I stay of Milorganite 3. Is there another organic in this same category that's not heavy in P? I heard chicken feed is a good slow release for microbes.