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Old 12-28-2010, 01:05 PM   #31
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Regular hammer is fine, BUT, be sure to wear EYE PROTECTION and try to confine the space you are in. This is coral rock and it will send sharp shards in all directions. Use the rubble in the sump.
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Old 12-28-2010, 01:16 PM   #32
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Will do... I think I still have some of those protective eyeglasses... They are not Coral Rock they are the Volcano Rocks will be using for the base then top off with my LR. And they will get a through cleaning once I break them down to more manageable sizes.
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Old 12-28-2010, 02:00 PM   #33
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I'm not really sure you want to be using volcanic rock... I've heard that you'll have heavy metals leach from the rock into your tank which can really screw things up... I'm sure someone with more experience will chime in to correct me if need be.
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Old 12-28-2010, 02:04 PM   #34
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I hope someone else will chime in because my LFS is and has been using those rocks as the base rocks in their main tank display and it has been setup for number, number and number of years....
Especially before I go to all the work to clean them up and break them up to more manageable sizes....
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Old 12-28-2010, 05:35 PM   #35
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Yeah, I've heard several opinions against using lava rock. I wouldn't use it, you never know what is in those. Too much to risk for an expensive reef.
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Old 12-28-2010, 06:39 PM   #36
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I've also heard several opinions on lava rock. I could be wrong, but I don't think all lava rock is the same.

The tank you say the LFS is using lava rock in, is it a reef tank, fowlr, or FW?

If the rocks leaches heavy metals it will be especially harmful to your inverts and corals .
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Old 12-28-2010, 06:41 PM   #37
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Their tank is a reef tank and has been set up for many years.
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Old 12-28-2010, 06:51 PM   #38
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So what would be the best type of rocks to use as the base rocks then?
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Old 12-28-2010, 07:00 PM   #39
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I was doing some research, and from what I found, some "lava rock" is manufactured and is inert. (wont leach). The general consensus from what I saw is most LFS are selling a safe version of "lava rock" that won't leach, often treated to make it inert. I don't know what "treating" the rock actually is but presumably it makes it safe.

If you're concerned, ask the owner or someone who knows where their lava rock comes from, and can answer your questions. If they will tell you their source, research what they do and use.

If they can't or won't answer your questions to your satisfaction, then I'd use something else, but if you feel good about the answers and info you get from them, then I'd give it a try.
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Old 12-28-2010, 07:02 PM   #40
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Okay check with them to see where they are getting them from. But in the meantime they can sit in the box till I get more info from the LFS and before I start cleaning them.
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