volcanic

So.... about a month ago i started my nano tank, (10 gal, 4 lbs live rock, 5 crabs, and 2 damsels) the tank is running good so far but i have the normal colored rocks you buy from the store and im being told to change to sand. MY QUESTION IS... I took a trip to the island of Iwo Jima a few...

I'm thinking about adding more live rocks to my 30 gal tank. Right now I have a few pieces in there, but its all stuff I've cured at home following instructions online (i.e. keep in covered bucket with something to circulate water, keep changing every couple of days, monitor die offs and...