I just repotted my Kishu Shimpaku in 1 part Akadama, 1 part Kanuma, 1 part Lava. It was in 100% akadama. I just wanted to make sure that using the 1 part Kanuma didn't add too much acid to the soil. Is this a good soil mix, or should I repot it swapping out the Kanuma with pumice. I've included a photo of my Kishu. Thanks for the help in advance!