11-13-2007, 06:23 AM
Join Date: Sep 2007
| | Re: Turface what?
Just an update. In the end, I went with layers of Onyx Sand, Turface MVP, Flourite. (with some exposed sand areas)
So far the pH is .2 higher, and the kH and GH are unchanged, vs. Flourite-only.
The construction sand I found was alkaline, so I saw no reason to use it other than cost.