I posted mine in the other thread
I went and bought soapstone (I think) the one used as trim or accent pieces, each strip is roughly 3/4 in by 3/4 in by 12 in. I glued them to the glass using aquarium safe silicon in random patterns after breaking the pieces to create depth.
I had to keep doing water chances and changing the batting I used in the filter until water was clear, that took about a month. After that water had been clear, no mineral deposits in the glass and API reports all levels where they need to be
In this pic you can see what I mean with the random pieces