3rd Pic from top on the lower side you will see a 10 reading. I bought a cyphastrea and placed it on the vertical/shaded wall.
I was hopeful that it would encrust up it. Would have been a cool view from my seat to see a wall of red. But after the readings, I moved it.
I was hopeful that it would encrust up it. Would have been a cool view from my seat to see a wall of red. But after the readings, I moved it.