I don't have an answer but I am interested in hearing about your experience with BDBS! I made the choice of going with that for the 125 (when I actually eventually go pick it up....) so I'll be following along to see how it works for you!!
Yes it is. I have srimp tank with it.
I don't know did not think about that....duh. Tomorrow I will look at it and see. I am pretty sure it is the finer of those two, because it is powder like. But it seems to be working good in the tank.Are you using the 20/40 or the 30/60 grade?