Yes. Just working through that now... the reef structure is 1 1/2" pvc pipe. I will cut 2" pvc in half with 4 or 5 pairs of holes along each cut so that i can "stitch" it together with cable ties. I will then use dry rock and expanding foam to cover the 2" pipe, and then place them round the existing pipe. I will do similar for the edge of the fibreglass grating, except I will use sheet pvc.
Thanks for the warning. I have my full tang quotient, minus 1 at the moment. The only other tang I had planned to introduce is an Archilles, right at the end. Your story gives makes me pause... does anybody else have any thoughts?
I too had a similar experience with a powder blue, very mean fish, he dominated the tank and killed all new fish except a large Imperator, then he backed off. Achilles are Ich magnets