Bugs!!

[Aquattro]

Jamie, like I said earlier, maybe population densities play a role. It is possible that I have a lot more than you and that's why I see negative effects.
I may have even made the same call as you at the time, however, knowing what I do now, I would make very certain none went in the tank. I think iodine and a magnifying glass are all that's needed to ensure this.