Oh also. I was curious about the NPK. What do the numbers indicate exactly. I was under the impression they indicated the proportion of NPK to each other; however, if that was the case then wouldn't 10-10-10 just be expressed as 1-1-1? If that is the case then how would you compare fertilizers? For example, it might say 8-7-5 and another one say 3-1-1 but if they are only proportions then the fertilizer with 3 could theoretically supply more N than the 8. I think I have something wrong here. Someone please correct me.