Hm. I don't really want crushed limestone.
I think I'll just budget for 15 bags of Caribsea. That way I don't have to worry aboput what might be in it. The Super Reef seems to be perfect for my application (burrowers and DSB). Another peace of mind thing rather than throwing different stuff together.

If the Jawfish are too tricky it will just be a cheapo yellow watchmangoby lol
http://caribsea.com/pages/products/dry_aragonite.html

Maybe I'll find somebody that can get me a deal on that many 40 pound bags when the time comes...