I M E :
Cementation of silicate sand is faster,
The shape for compacting sand layers is tighter and no airspace below 1/4 inch for bacteria,
Creates anoxic areas and hydrogensulfide gas pockets faster,
It offers ZERO benifits for buffering,
The sand particle physical shape irrates corals once blown into the flesh, and any motile or sand dwelling life is cut up and irritated by the rough edges of the sand,
It holds detritus and is near impossible to siphon clean,
Phosphoritic acid reactions are increased, and cause Cyano to bloom easier as well as Diatoms which can be prone to colonial crashing and a near "wipeout" if that happens OR if you are running UV, can add a huge amount of dieoff to teh bioload on a daily basis that nitrates soar ever skyward.......
List goes on and on, but I digress
Howmuch sand U need ? I have one 50 # bag of "VINTAGE" late 1990's sand that is still MIP and has never been "played with" .
LMK..... such a "collectable" item should fetch a few ruppies on teh Black market :bum: