Hi, I'm slowly getting my supplies to set up my first aquarium (my husband has always had them since he was a kid, 20 years ago). This is his first planted tank though. We were wondering if you had to prepare the plants somehow before you put them in the tank. I ordered them off of ebay and they will be shipped at the beginning of next week. I don't want to get duckweed or snails or algae. Any suggestions?