Actually I do get successful with ADA AquaSoil Amazon, good couple batch of babies from CRS/CBS in SSS grade. I just curious about the sand, because I know a person using the sand for his CRS in SS, he got good results .. so it's making me like "WoW"
depends on the water parameters and the shrimp. if they have natrualy low ph then there is not need for a buffering substrate. a friend of mine has a ph of 5 when it measures so she doesnt need a substrate to buffer