curing live rocks

[cy88]

Hi all,

I am setting up a new 75G, which is a huge upgrade from my 20G. There will also need to have an increase in the amount of LR from my 20G which has around 15lbs in it.

My question is, do I have to buy cured rocks? Can I "seed" it by putting in some of the old rocks (let's say, 10lbs of it), and add the rest as uncured rock?

Reason I am asking is that I want to save some cost on buying cured rocks vs non-cured. I believe at my LFS they are $4 vs $6 difference, and that is a $120 difference for 60lbs extra!

Thanks all,
Chris