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Grown too big and want to encourage new reefer with a frag to try out. Will frag on the spot. If interested pm me your number and I will get back to you when I'm free. Cheers [emoji16] Sent from my INO-2 using Tapatalk

Might be cyano or a dense algae. Does not matter though since your rocks are still new. Let them develop some periphyton over the next year... What is Periphyton? Periphyton is what turns your rocks different colors. You know... the white rocks you started with in SW, or the grey rocks (or brown wood) you started with in FW. After several months or years, the rocks become a variety of different colors and textures. Why? Because the periphyton that has grown on it is a mix of different living things, of different colors, and thicknesses. And the important part is: It is LIVING. That's r