I PMed the guy about his decision to use it and heres what he had to say....
Hi Jordan, i have never personally had a tank running with it in myself but i have installed a few systems here in South Africa where it was the primary sand bed,
Alot of the guys still prefer the caribsea aragonite, i find it too expensive as well as the grain size being a little too fine, so it gets blown about the tank alot easier than the AM stuff.
there have been no negitive results inusing the AM aragonite, i doubt very mych about any of the aragonites abilities to "buffer" the water as this would require the ph withing the system to drop horrendiously low, this would cause inmate deaths before it became effective. so i go on about my normal dosing routine by adding calcium/ magnesium and a buffer.
trat the system as normal there is nothing more to aragonite other than its nice white appearance, if you know otherwise please let me know
i hope this helps somewhat..
les