Hey Corey. From memory, I believe Logan Labs has posted the maximum application limits on their website. But if not, I have used the book The Intelligent Gardener for those limits. Its written by Steve Solomon and is a pretty good resource for managing soil amending. As you can expect, different resources will advise different limits. I like browsing Spectrum Analytics website and talking with their Agronomy team too. I haven’t yet come across a resource that advises limits to a combined menu of amendments however. My 2cents on amending with azomite is that it has a lot of Aluminum in it, which you already have heaps of.