Live rock question


New Member
I have a quick question. I want to put live rocks in my tank with fish, no coral at this time. What do I need to sustain them, will I need a calcium reactor?
It's a 240gal tank. Thank you for you advice.


Well-Known Member
Absolutely nothing. They are live because of the bacteria on them. Fish waste will feed it. Live rock is an important part of your filtration system.