hey all am planning to carve the mfk symbol onto a rock to put into my new world cichlid setup. ya know the ]V[ or ]v[ with the devil tail. anyone else ever done this??? at my local aquarium they have their logo in all of their tanks on a piece of wood or stone or even the back ground. i will post pix of it as i get it done. quick question should i carve it on shale, sandstone, or some other rock??? we have lots of granite and quartzite near my house??? thanks