Oh on, I tink I may have committed the exact same mistake as the TS, i.e. introduction of new plant without quarantine. I just bought a small piece of driftwood with some plants attached (as well as 10 extra CRS). I did wash the plant as well as the piece of wood thoroughly. But after introducing it to my existing tank (
2-day old tank, which contains 5 existing Sakuras), 2 of my Sakuras & 1 of my CRS begin to exhibit the twitching-then-drifting pattern!
Damn sad to cause the loss of lives due to ignorance...