AEFW WARNING

[Aquattro]

FWIW, as someone that owns a microscope and inspects everything ever purchased, I have bought frags WITH AEFW more times than not, via private or online vendors. At one point I guessed that 80% of SPS tanks in the country likely had them, known or unknown to the hobbyist.
As a "best practices" measure, EVERY frag you buy should be considered "at risk" and treated accordingly.
If you have regularly bought acro frags and not treated, you probably have them