+1 coralline growth
I liked the purp color in my reef, and wasn't a problem for my tank glass.
Now I bleached my Live Rocks due to a problem, and I miss that corraline, tank look a bit ugly without it.
The only coralline left is what grows on my powerheads, and tend to block the intakes holes, so I need to use sharp metal object to clean them a bit...
Good addition a tank