yellows

[twon8]

That piece was fiji from live aquaria with one of their 89 for 45lbs. most of it grew on there. that rock is constantly having things such as the shells you see placed on it, and when they are moved the coralline is gone, but it quickly grows back. Nearly every light exposed piece of live rock is purple. you can see in this pic the line on the top piece( the same one with the orange cap on it) where the coraline stops.

my back wall would be covered if i did not scrape it from time to time. my right wall is mostly covered.