Join Date: Nov 2006
Location: Coralville, Iowa
I believe that these two products are similar to Aragonite sand, right? If so, they will interfere with your water chemistry, over time. If you want to use sand, you should try a course one that does not fizz when you pour hydrochloric (muriatic) acid on it. You can layer just a fine sprinkling of peat and perhaps a bit of laterite under this.
Two more inexpnsive substrate options are soil master select and turface pro league. I use the soilmaster and am quite happy with it.