I know crushed coral raised PH, GH etc.... I've heard Cory state aquarium coop has it in the holding tanks for plants at the warehouse. Wondering what the benefit for plants is. Could this be something that helps me with stem plants? I cannot keep stem plants alive, at least bacopa, rotala, and ludwigia always die off on me, but things like pogostemon steallatus octopus, Mexican oak leaf, sag grass and valisneria all do pretty well for me.