pretty lucky, all or at least most was confined to the halimedia . there was just a little stuck to the power head and over flow. I got most of it, but boy did it do a job on the halimedia. most of it is rotted off at the bottom and white. The top was nice and green.
You would think between 3 urchins, a scopas tang and a 6 inch seahare, there wouldnt be anything green in that tank. lol