calcium carbonate rock...

[StirCrazy]

Originally Posted by Canadian Man

I think this rock is more porus than any of the "Actual" live rock I have in my tank. JMO
I have no proof of this other than the odd observation of taking a piece out of the water and watching how much water pours out of it.

ahh i guess less pouros is a bad term.. it is subjective.. I have large chunks of rock (about say 12" x 8" x 8") that you would expect to weigh about 30 lbs actualy weighs about 5lbs then I have a chunk that is 1/2 the size that weighs 15 lbs so there is a large varence in density of LR depending on the type of coral that made it.. I have looked at the stuff you are talking about and it is fairly light but I didn't find it atractive or interesting.. like I said I concider it good stuff to put under the real rock to make it look like you have more.

J&L sells it as CARIBSEA REEF ROCK for 1.50 / lb in a 50 lb box and there is a pic of it under the "Sand and substrate" section of aquarium supplies

the bigest problem I have with it is that it looks like mined rocks.
but now that I think of it I might buy a few lbs to break up more and mount some frags to.

Steve