A while back I got some assorted swords from someone, at the time I put the plants in pots with a mixture of sand and the substrate that aquariumplants.com sells, these then went into a barebottom tank. What I want to do is turn the tank into an actual planted tank so I can take out the pots, only question is what would be better for the plants, sand substrate or the stuff aquariumplants.com sells? The sand I have is aquarium filter sand.