Planted Tank Guru
Join Date: Sep 2006
Location: Northern California
I know a handful a few people that have used sand with great results. Sure, it doesn't contain any nutrients, but diligent dosing of the water column and root tabs, where indicated, will adequately support plant growth.
My only issue with sand was that when I bought two batches of the exact same brand/type of sand, the first batch was inert and never changed my water parameters while the second batch made my hardness skyrocket within a matter of weeks...check the sand you buy!