<a href=showthread.php?s=&postid=11958360#post11958360 target=_blank>Originally posted</a> by Kolognekoral
Interesting you should mention the infamous tricolour. All the ones I've seen are A. nana, not A. valida. This colour combi is common amongst acros, but the two species are pretty different next to each other or even in a photo. A. nana has strongly appressed radial corallites and a fine structure, while A. valida has tubular, somewhat plump, slightly appressed corallites in at least two distinct sizes. Also, I have noted that large colonies of A. nana are quite tall and linear, while A. valida is much bushier and branched. Aquarium conditions can influence this.
Good idea on getting the corals used to the increased lighting. Always best to go a bit slower and keep your eyes peeled for scorching.