What once was a small patch of zoas has now become a large patch of zoas on my bare bottom 100g. They have made their way to the silicone at the edge of the tank. Are there any concerns with them growing on the silicone as far as the integrity of the silicone? Is there a way to safely remove them? Are there any concerns with toxin release if I were to 'cut and peel' a line of them to keep them from continuing onward? I'm fine with them on the bottom of the tank (no coralline to scrape)...just looking for ways to contain them. Thanks for any insight!