If I were you, and I were to buy rock online, I would buy base rock.....probably Fiji. Personally, I like to hand pick my rocks. My LFS
gets in Fiji and Kaelini, but a while back they got in some Tonga. Online, I've bought Marshall Island LR
. Only 25 lbs, though, the other 200 lbs. came from my LFS
. I use a mixture of Fiji, Tonga, and Marshall Islands. They all perform the same service to you, so its up to you.
Just remember, Fiji is more dense than most other types, so you need more of it to fill the same space.