95% of my tank is composed of frags, the reason being when they grow in tank, they appear more natural than a colony on some hunk of cement wedged into a crevice. I have 3 colonies I bought from the LFS because they were really nice, and I got an exceptional price, but mostly, frags all the way. If you look at Denis' tank, you can see how that natural growth looks vs. the fruit stand appearance of many "instant" reefs.

I have bought several colonies over the last couple years....wish I hadn't, it's much more fun watching that little tiny frag grow and fill in your tank..instead of trying to find a big space for a colony and shelling out much more cash!

My tank is 100% populated by frags. It doesn't take much more than 1 year to produce things that look like large colonies.

I let Mike do that, then I frag his. :lol:

Lots of interesting response. Beautiful tank Denis. My 30 wants to be like that when it grows up. :mrgreen:

By the posts here already, some pretty amazing tanks grown from frags.