i got the idea from matt rize veganics, he uses the canna terra with the bio canna line. ive heard that it can be weak sauce when it comes to yeild, but everything else is top notch. there is no pearlite in the canna terra and the bio bizz is a pretty dense mix as well. i like my soil to be a little more on the dense side opposed to pearlite in the soil like roots soil mixes. but if you have any qiestions you should email the company nectar for the gods, they are super helpful, no question is too stupid and they will tell you exactly how their product should be used, they are awesome!!