Where is it better to get rock
It depends on the quality and price of the LR
from the LFS
. For me, it was a no brainier to order online since it is $5.99 per lb at the LFS
. Also, the quality of rock from my LFS
is garbage. No coralline algae on their rock at all. The online stuff that I got had great growth on it.
also which rock is best for buffering pH?
It doesn't matter what you get as they won't have too much of an effect on ph
. Aragonite and crushed coral substrate may help a little, but in the end, it will depend on the salt mix you use, bio-load, Co2