I sure hope when my second package arrives, that my cleaning crew has a big appetite. My rock is starting to get an alge build-up. should I start cleaning the sand or should I hold out so the CC will have some grub when they arrive? Also I have about six urchins in the tank and they have grown almost 4 time the size when they arrived with the rock. Are they good for the tank? Will they sting if I touched them?
Thanks
Thanks