Bought it so I could use it in my frag tank. Got it in my main tank to cycle it first. great value for the size and weight.
LifeRock Shape $10
I bought shape rock for my new 29 gallon reef tank. The arch i bought was great. I also bought a doughnut shape rock that makes a great cave for fish. I highly recommend the shape rock to help make caves and your tank more appealing for you and your fish.
Life Rock Shape $7/lb