Limestone substrate

[dngspot]

How common is the use of Pavestone pulverized limestone as a substrate? I would like to know the pros and cons.

Thanks

 

[dngspot]

I would like to also mention that I have had the stuff in a glass over night and it cleared by morning. I vinigure tested it and all of it desolved. I also tested for coper and Phosphate.
All tests look positive.

 

[Travis L. Stevens]

It's used quite widely in many of Texas's reef clubs. Central Oklahoma Marine Aquarium Society uses it quite readily. I also use it and have yet to see any major problems. There have been two tanks that I know that have had "problems". One had a breakout of diatoms and one had a breakout of dinoflagellates. Eventually both tanks subsided and are operating nominally. Essentially it breaks down to considering it a less than pure source of aragonite sand, but it works just as good with the same buffering abilities (if that's something that you go for). Here is a small list of some threads in the COMAS forum that talks about Pulverized Limestone or of tanks that are using it.

http://reefcentral.com/forums/showthread.php?s=&threadid=875880
http://reefcentral.com/forums/showthread.php?s=&threadid=902677
http://reefcentral.com/forums/showthread.php?s=&threadid=912378
http://reefcentral.com/forums/showthread.php?s=&threadid=929280
http://reefcentral.com/forums/showthread.php?s=&threadid=889622

 

[dngspot]

thanks Travis