I have used that pelletized gyps also, it won't raise your sulfur levels but It works I'm having a hard time getting my Sulfur levels to rise in my garden according to soil tests I take. I'm high in everything else P,K, micros, little high in ph also. I'm going to try spreading elemental sulfur (90%) to rapidly raise soil test S, and attempt to lower pH some. Elem sulfur, which half breaks down year 1, other half breaks down 2nd yr, sort of a slow release. Sulfur is very leachable, hard to keep it in soil profile. I also like AMS (21-0-0-26S) that form of sulfur is plant available very soon after spreading, so in spring/summer i like AMS. I heard some MI dry bean farmers spread urea/AMS on their beans mid season as they take more N than what they can produce? But if that's all too much just go to The farm store, buy some bagged 16-16-16 and spread it pre plant in spring.