I wanted some extra cover for my betta while his other plants finish growing in, so I went to the specialty shop and got some floating plants. I was planning on getting duckweed, hornwort, or salvinia minima. The guy that was helping me said they were definitely out of the duckweed and hornwort, but had some "salvinia something or other", the tank they were in looked pretty clean - no fish or snails that I could see, just plants. Brought it home and was about to just toss it in the tank straight from the container when I remembered all of the stories I've heard about people getting pests from their new plants. All of the plants currently in my tank came from tubes, so I just rinsed them off with tank water and planted them. I've read a few suggestions about using bleach (sounds kinda dicey), pottasium permanganate (would need to buy some), or just rinsing them with tank water and adding them in. Not sure which way is best, so figured I'd ask which methods work best for you guys?