Does anyone have tube worms growing out of their tonga branch? There probably aren't many bristle worms in there either. I probably wouldn't want to use 100% Tonga branch rock in my tank. I tried cutting a Tonga branch with my jigsaw once. Thought I was going to break the blade.

As a note, the Fiji base rock at J&L right now is man-made.

what does that mean?

Are you guys referring to the $1.99/lb Fiji base rock J&L has right now? I don't think that stuff is live. I think it is dead/base rock, but was Fiji, and therefore they are charging $0.50/lb extra because it is nicer shapes than their normal base rock.

The rock is man-made as oppose to natural rock. The last time I checked, they had the Walt Smith (Fiji) aquacultured rocks as Fiji base rock.

http://reefcentral.com/forums/showth...erock+and+walt

http://www.reeferrocks.com/liverock/history.htm#4

Just called them. They're not live rock but have coralline algae. Does that mean they lose their filtration function or what? I'm confused.

oh damn, they're cement?

From my understanding, the bacteria that living in the liverock does the 'filtering'. The more pores the rock the more bacteria. If this concrete rock in pores, and is left in the ocean it grow. Then it should behavior the same way. I am chooses not to find out first hand however. lol

Leaching phosphates for ??? however long does not appeal to me. :lol: I also think you will find Real Live rock of any type will have no life in it.

Interesting question. Here's their website:

http://www.pacificaquafarms.com/cultured.htm

I can't say without a doubt that this is the same stuff as what you see at J&L though. All I know is that they told me it was Walt Smith aquacultured man-made rock.

I can second that.