Hi there I’m new to bonsai and had some questions regarding soil mixtures. I am looking to make a soil mixture that won’t break the bank and Akadama and such is quite expensive where I am. I have read Napa 8822 works well as pumice. My question is could I sift this and mix in some sifted organic mix with it or would this be a bad mixture. I’m looking for soil for a juniper, spruce and boxwood. And then I also have some one year old Japanese maples that I’m not sure what type of soil would be good for these little saplings. Any help would be much appreciated.