not an expert here ..But.. a Good First test at the LFS
is to give the Curing Tank a good smell. If the tank stinks, odds are the rock is not cured yet.
has hundreds of pounds of LR
in a HUGE TANK... It smells exactly like my Uncured rock did in my tank before it was "Ready". I asked the dude at the LFS
if it was cured, you know, as a test.. And he said..Hells No.. You have to cure this yourself when you get home.. They passed the test!