Fenbenzole for clove polyps

[Starry]

Has any one tried treating in tank with this stuff?
http://maxdraco.wordpress.com/2013/0...-hydriods-etc/
I have a 180 gallon tank with 50 gallons in sump. I picked up 10ml of liquid Safegaurd. I'm hoping if I mix 5ml in 1 gallon RO, then dose 1/2 gallon mixture it will be enough to kill off the cloves without adverse affects to the rest of the life in my tank. I have aprox 250lbs of rock in my tank that is totaly infested with both blue and brown cloves. Its even growing in the sand. Kalking or removing rock is not an option.

Off the top of my head livestock that MAY be affected includes:

3 clams
blood shrimp
cleaner shrimp
porcelain crab
hermits
various snails
RBTA
Corky finger Gorg
many many sps

Any thoughts on this?