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View Full Version : Help I'd this rock please


Droopy396
07/29/2013, 08:39 PM
I picked up a saltwater set up at a garage sale this past weekend. It came with around 50# of this rock. It doesn't look like any rock I've seen. It's fairly light weight and very porous. It has a lot of small holes and each piece has a definite flat spot, as of it was sawed. Is it ok to use in my tank? Do I cure and seed it like any other rock? Any help would be great! Thanks!!!

Painted skin
07/29/2013, 08:44 PM
I picked up a saltwater set up at a garage sale this past weekend. It came with around 50# of this rock. It doesn't look like any rock I've seen. It's fairly light weight and very porous. It has a lot of small holes and each piece has a definite flat spot, as of it was sawed. Is it ok to use in my tank? Do I cure and seed it like any other rock?

Forgot the name and type, but yes to all

AmberFL03
07/29/2013, 09:14 PM
Nice find, good luck!

Fuji04
07/30/2013, 04:54 AM
Looks like Marco rock to me....im currently curing some i picked up as well

leveldrummer
07/30/2013, 07:04 AM
looks like lace rock, or texas holy rock.

Fizz71
07/30/2013, 07:27 AM
I had pieces that looked like that and I thought it was dead coral. Which is fine to use...I still have it in my system someplace. Just make sure you rinse it well, it breaks down to a powder easier than most rock. It's very porous, but brittle (comparatively speaking).

Did a search for "fossilized coral". Does is look like this? (http://www.thecoralman.com/about.htm)

http://www.thecoralman.com/images/coral.jpg

TheAquatect
07/30/2013, 09:32 AM
Looks just Agatized Coral. We call it Fossil Coral or Coral Rock here in Florida. Its actually really common in FL, I have quite a few pieces in my tanks.

http://www.dep.state.fl.us/geology/geologictopics/rocks/agate.htm

Droopy396
07/30/2013, 11:09 AM
I had pieces that looked like that and I thought it was dead coral. Which is fine to use...I still have it in my system someplace. Just make sure you rinse it well, it breaks down to a powder easier than most rock. It's very porous, but brittle (comparatively speaking).

Did a search for "fossilized coral". Does is look like this? (http://www.thecoralman.com/about.htm)

http://www.thecoralman.com/images/coral.jpg

This is it. Looks exactly like your pic! Great info in Link! Thank you!