My whole tank is tonga branch from Dave at www.vividaquariums.com His is not the little thin branches that break in shipping. He sent me huge chunks. If you look at my tank two of the islands that the bridges set on are each on piece of rock. The one on the left is made with tie straps from two pieces of rock. He wraped every piece in bubble wrap individually, and it arrived in perfect condition. Very little breakage. On other tanks I have done his rock always arrived the same way. It does cost a little more, but that is the foundation of the tank. It will be in there for years. I also like that it is not the really dense fresh rock. It is older rock that has many holes and tunnels drilled into it by marine life, so it is more porus than the stock tonga branch I have seen elsewhere. I get nothing but quality service from Dave, that is why I endorse his site. He is a sponsor and usually answers his own phone to boot. LOL Steve