Leaching phosphates from rock

[michika]

Originally Posted by asylumdown

so my questions are thus:

1. Will this principle work with calcareous rock?

2. Is this something that everyone already knows about and it's commonly used and recommended but because I live under a rock I've just never heard about it?

That would be a no on number 2 for me.

I wonder if this has an applicability for better solutions to exporting or ridding our systems of the dreaded algae with no measurables.