I used aragonite (Caribsea??). I don't know if there is an advantage/disadvantage of one grade over the other (coarse vs sugar-sized) but I ended up using a mix of the two....mainly because that's all my LFS had.
Crushed coral is apparently a big no-no, btw. I think there is a sticky at the top of this forum detailing why.
Robbie
Crushed coral is apparently a big no-no, btw. I think there is a sticky at the top of this forum detailing why.
Robbie
