...but I'd like to know which acro I could place on another acro that will win in the fight.
OK, here's what's going on. When I moved my tank last year, and upgraded, my pillars were too unstable without a full overflow box to lean against. My largest, center pillar ended up falling backwards against one of the back pillars. Because redrilling the pillar with a thicker rod was out of the question due to all the coral growth, I ended up using a cheap brown acro colony as a "spacer" between the two pillars. This worked perfectly. Not only did it hold the large center pillar upright, but as it grows, it locks the whole structure in place. Sort of like living Aquamend
Unfortunately, the acro (looks like a tricolor of some sort) remains hideously brown. I realize I can wait longer, let it really grow onto the two pillars, and then just kalk the whole thing, killing the acro, and cementing everything in place. But I was hoping to place something else on top of it, since it is relatively high up, prime realestate. I'm thinking mille?
OK, here's what's going on. When I moved my tank last year, and upgraded, my pillars were too unstable without a full overflow box to lean against. My largest, center pillar ended up falling backwards against one of the back pillars. Because redrilling the pillar with a thicker rod was out of the question due to all the coral growth, I ended up using a cheap brown acro colony as a "spacer" between the two pillars. This worked perfectly. Not only did it hold the large center pillar upright, but as it grows, it locks the whole structure in place. Sort of like living Aquamend

Unfortunately, the acro (looks like a tricolor of some sort) remains hideously brown. I realize I can wait longer, let it really grow onto the two pillars, and then just kalk the whole thing, killing the acro, and cementing everything in place. But I was hoping to place something else on top of it, since it is relatively high up, prime realestate. I'm thinking mille?