Btw, I do remineralize per my standard, which is to 5 gh. For the longest time the Akadama ducked gh right out of the water, and after about 2 months that effect was no longer noticeable. I'm guessing that the Akadama stores minerals but then rapidly releases them.
All I know is ill never use it again and never suggest it to anyone.
I might try to get some cardinals to live in it though instead of breaking it down tonight.