I was sent a bad pkg from someone(no names mentioned) but it was a clumped together batch of a few different plants, how do I put pieces of plant in my tank. the bottom is filled with sm-med. gravel. I have it floating in my snail tank now, should I just keep it there? I have about 1 or 2 good pieces the rest i had to toss out due to how bad they were. ugh.. what should I do?