I how to lower ph in soil to make more acidic

What are the best ways to lower the pH of soil. What are some amendments I can add to the soil as it goes on to make it more acidic if anybody needs more details just let me know what you need to know and I'll try to answer your questions

Also I guess I should have asked what are good amendments to add to the soil before planting to help balance out the pH to about what a cannabis plant needs. This is the basic makeup of the soil I'm going to be using I will be adding a little bone meal, a little blood meal, some rock phosphate, and kelp meal if possible I've thought about adding a little rabbit manure also

The lime in your mix balance your ph because of the peat and supply a little calcium and magnesium