How do people ensure that hitchhikers don't get into their tanks on the plants they buy? I recently purchased a large batch of plants from greenline and now, a few weeks later I've discovered that I've got several dragonfly larvae running around my tank, of 2 different types! Now these are apparently predatory creatures so while they wont do much damage whilst small as soon as they get big enough to take on my shrimp I'm going to have serious problems. As it is I'm fishing them out whenever I see them (they're difficult blighters to catch) and I practically stripped my tank down when I first discovered what they were. For those that don't know what I'm talking about I've found these lovely creatures... What I really don't want though is for it to happen again when I decide to add/change plants. Now I did bleach dip all the plants before putting them in, risky on the plants I know but I felt it was worth it to ensure that most stuff on them was killed. However this doesn't seem to have done the trick. Do people quarantine their plants, i.e. have them in a second set-up with all the lights and CO2 etc for a month or so before putting them in their main tanks?