Sps issue

[Reef Pilot]

Originally Posted by fishytime

while the dense pieces are full of holes, all these holes are, is surface area.....the holes are almost solid and smooth.....good live rock is like a sponge, porous to the core, becoming "live" all the way through....

Hmmm, thanks for the explanation. It does make sense that true live rock would be more porous.

I now have a 50/50 mixture of live and marco rock. I didn't notice a difference in weight, and my tanks are doing fine with it. But after reading this, I may just add live rock if I need any more in the future.