Hi thank you for your reply. Would ha:e answered earlier but my notifications don't seem to be working.You can cut that stuff down into micro parts and it will grow back don't worry. It starts propagating by itself pretty fast as well by losing little parts which attach themeselves somewhere else in the tank. I have been using it in my latest tank and it grows into thick bushes if you leave it be. I just cut it into pieces and glued it down to rocks personally.