I need to start prepping my dry rock to go into the new tank. Since the dry rock BRS sells is covered in dead organics it needs to be cleaned to ensure I don't have phosphate issues once the tank is setup. I'd hate to spend $30 on this stuff just to use a little bit of it. I was curious if anybody had some they would be willing to part with. Maybe people with a pool or spa? The key is it has to be a phosphate remover with lanthanum chloride.