I want to change my gravel substrate for a sand bottom. I think this would be a more natural look for my native tank. So after a few searches about the topic in general(trying to save everyone the hassle of throwin up thread links) I want to use 3M colorquartz S or Tgrade. I tried googling it and couldnt find an online seller or any useful info on where to look for it. I assume that I would have to buy it from a pool distributor. I wouldnt mind doin a mix of this and mineralized soil but havent decided yet. If anyone knows of an online site or a retailer hook me up. Also any other comments about using this substrate would be cool too.