Greetings all. I was given a 70g aquarium and I am setting it up as a reef tank. The aquarium was used previously with freshwater fish, and has an abundant amount of sand/substrate. However, I do not know what it is -- and the previous owner has forgotten/doesn't know either
It would be great to know what this substrate is, if it can (or should) be used in the new reef setup. Help?
It would be great to know what this substrate is, if it can (or should) be used in the new reef setup. Help?