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Old 06-17-2008, 08:59 PM   #1
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Help...Base Rock for Reef

I need to make some more rock shelves in my reef tank for new corals. I didn't want to get Live Rock because of the chance of putting something bad into my healthy tank.(Ex. Isopods, spider crabs etc) I have had to deal with lots of bad critters and don't want to ever again. So my first thought was to get some LR and then dip it in a Freshwater/Iodine Dip and that would kill off everything. Then I thought to myself I will be paying $6 a pound for "dead" rock, so I decided to get some dry base rock. I bought some base rock today and I asked the owner of the LFS if the rock came from the ocean and she said, "no it comes from the mountains" She also told me that it is safe for saltwater etc etc. However, I am a little concerned that there could be metal or something in there. I do believe it came from the mountains becaue I can see a couple specs of quartz in it. I don't know if I am being paranoid and I should just put it in the tank, or if I should return it. What would you do? Does anybody know of any good online sites to buy base rock? Thank.
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Old 06-17-2008, 10:18 PM   #2
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If it came from a mountain, there might be a possibility it could contain heavy metals.
Here is a good view of base rock:
Marco Rocks The finest aquarium rock available, base rock, live rock, reef rock, marco rock, reef tank saltwater fish, live corals, Marco rocks, Fiji live rock, Tonga Live rock
He has upped his prices since I bought from him, but at least you get an idea of what it looks like. I would also think non-reef rock wouldn't be a porous.
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Old 06-17-2008, 11:28 PM   #3
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Thanks Roka, thats exactly what type of site I was looking for. I am going to buy from him and return what I bought today. I dont want to chance the "mountain" rock.
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Old 06-18-2008, 12:03 PM   #4
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You might also want to check out Something Fishy. The base rock had been on sale for 89 cents/pound but now it's back to $1.29 /pound.
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Old 06-18-2008, 09:38 PM   #5
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You can add base rock directly to the tank right? No Curing or anything like that since there is nothing live in or on it?
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Old 06-18-2008, 09:57 PM   #6
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Watch the ammonia anyway IMO. Some base rock, assuming it is dry that is, could still have stuff on it that can rot once it hits water.

Wonder if you could put it in plain, non-salted water and check ammonia? Maybe a day just to be sure? Of course if the addition is only a smaller portion of the total, the existing rock can prolly easily handle any spike.

I'm just catious with rock I guess. Any rock.
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Old 06-18-2008, 10:58 PM   #7
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I would say check the rock very well. I found a dried up brittle star on a big chunk of mine. Of course, there is no telling what is dead in the nooks and crannies.
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Old 06-19-2008, 03:42 PM   #8
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Marco rock is great, but DO NOT add it to an existing setup. It needs to be cured seperately. It's great for starting up a new system since it has all kinds of dried up pods, sponges, etc. Basically this was live rock that dried out. I found a dried up serpent star in the rock we used in my cousins tank.
If you add it to an established tank, it will start a whole new cycle.
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Old 06-20-2008, 02:14 AM   #9
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I would only be adding about 10-15 pounds tops to make some shelves for coral. Do you think that would still be enough to cause a mini cycle in a 75gallon tank with over 80lbs of live rock?
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Old 06-20-2008, 09:03 AM   #10
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Yes, 10-15 lbs of Marco rock will cause a cycle to start. There is tons of dead organic stuff in/on that rock.
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