Whilst I agree with a lot of your full post, on the manufacturers website it states "miracle mud is comprised of up to 80% oceanic mud, harvested from deep waters and then dried on land. The remaining 20% is a formulation of minerals and trace elements".
Thanks, I appreciate that, however my statement is rooted in a previous study. Sadly with the loss of the
www.reefs.org site, I can no longer reference the study. The results were that the mud is 30% silicone and therefore 63% silicon dioxide...quartz sand. Further, while ICP testing does detect calcium, it detects no alkalinity. So perhaps 37% oceanic mud? I recall Randy Homles-Farley once attempted to dissolve the sand in acid to try and find any signs of carbonate and could not. So perhaps no oceanic mud? My theory, again I have been around over 20 years, is that this mud is likely harvested in a brackish estuary more common of mangroves than corals. A lower pH and constant outflow will prevent calcium carbonate substrate from developing or settlings...but one could technically call it "oceanic mud"
The ICP test results are on EcoSystems own website:
http://www.ecosystemaquarium.com/faq/miracle-mud-independent-analysis/
Here is an old discussion on RC regarding it. Again, having known that even as late as 2014, I still use it and have it in my fuge now.
Now, note on the ICP analysis there is more aluminum than calcium...does not appear to be an oceanic source to me...not even 80%.
I will say again, I do use this mud, although I may switch sources soon. The mud has done well, but look at the tanks that use it. If that is what you specifically want to mimic, then by all means, use the mud! It will work great at keeping nitrates at 0 almost no matter what. However, if your goals are more "modern", the mud will work against you. I think in regards to modern methods, using a Balling Method with Trace Elements and high quality salts is a better way to get the calcium and trace elements than Mircale Mud. Keeping the current platter of trendy corals will require more careful control on nitrates and phosphates and that will be difficult with any "mud" approach IMO.
I wish Leng and his family well. Last I heard he was not doing well and that was about 2 years ago. I enjoyed my recent email exchanges with him when I set the current tank up. He is very passionate about the hobby....but was always very misleading in his marketing.
I will also note that Mike Paletta promotes this substrate and uses it on his tanks...with the reminder that Mike is a Fish guy first and foremost and I believe that is the strong point of the mud, is heavily fish populated systems.