I am about to buy substrate for my 75G. Looking at either Eco-complete or AquariumPlants.com's own: Freshwater Planted Aquarium Substrate. Has anyone used the AquariumPlants.com's own: Freshwater Planted Aquarium Substrate? I will be having plants, and I want a black substrate. I have heard that the Eco-complete is "mineralogically and biologically complete substrate is for planted aquariums and comes in live water that contains purifying bacteria". Is this true in working experience? is the Aquarium guys substrate completely black? Any info and experience on either substrate would be helpful. Thanks