When you visit pet stores they usually have the plants with the pots and the loose plants. My question is if i wanted to put the loose plants into pots which i have a bunch of what is that cotton like material that holds the plant in the pot? Also is it benficial to use the pots? I am not goin for an entirely planted aquarium instead just a few live plants to add to the aquascaping. Also recently I have purchased a number of plants and it seems like the other three variaties have adapted well but the amazon swords began to die, the leaves seemed to become almost translucent. Any ideas why?