I need to trim back a large colony of Palythoa's growing on my rock work because they are blocking the light on the corals lower down. The rock is in there permanently so there is no way for me to take it out and I was wondering if it is safe to trim them back with a razor blade, or something similar. All the articles on paly toxins have me jumpy and I want to be sure I am not going to crash my 40G tank by thinning out the forest while its in the DT. Thanks for the input.

