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Old 06-23-2007, 12:01 AM   #1
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Live Rock n00b question

So, how much live rock should one have per every inch of fish. I know live rock is beneficial to a tank, but I don't really know a whole heck of a lot about it, nor how much is necessary or good for fish. So far, no major problems. My fish appear to be pretty healthy. Just curious.
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Old 06-23-2007, 09:07 AM   #2
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1.5-2 lbs per gallon are usually recommended. Read these.

http://reefkeeping.com/issues/2002-06/dw/index.php

http://www.liveaquaria.com/general/g...al_pagesid=293
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Old 06-23-2007, 07:05 PM   #3
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If your adding LR to an established tank with fish you need to make sure there is no die off on the LR during shipping. Die off can cause a cycle.
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Old 06-24-2007, 04:27 PM   #4
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My local Petco has plenty of cultured Live Rock that sits in the tanks for a while, so I'm not too worried about die-off. Up to 2 pounds per gallon huh? Is that per gallon in terms of tank capacity, or per gallon of water that's in there? Just checking, because the more live-rock I add, the more water that will get displaced.
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Old 06-24-2007, 04:47 PM   #5
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I've always gone by the measure 1 pound per gallon for fish only tanks, 1.75 to 2 pounds per gallon for mini-reefs. That's based on tank capacity I believe, it wouldn't be easy to calculate water displacement of LR because some of it is pretty pourous (sp?) unless you add it all at once.

I was running about 1 pound per gallon with only fish, with no mechanical filtration besides skimming, and had great luck.

YMMV.
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Old 06-24-2007, 06:16 PM   #6
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I use 1-2 per tank size/gallons not water in the tank. And there is not golden rule to follow, more is better but if you like the look of the tank with less then 2lb per gallon then go with less.
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Old 06-24-2007, 10:56 PM   #7
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What type of setup and filtration do you have?
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Old 06-25-2007, 01:13 PM   #8
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Also it depends how heavy the LR is. The heavier the LR the less surface area and more LR you`ll need. If you have lightweight LR then you`ll have more surface area per pound thus needing less pounds of LR. HTH
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Old 06-25-2007, 08:41 PM   #9
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Also it depends how heavy the LR is. The heavier the LR the less surface area and more LR you`ll need. If you have lightweight LR then you`ll have more surface area per pound thus needing less pounds of LR. HTH
Great point. Everyone always says 1 1/2 - 2 pounds per gallon but if the rock is light then your tank could have too much rock not leaving enough room for fish. Most of my rock is lightweight and if I put anymore in my tank I think it would be too much.
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Old 06-26-2007, 12:44 AM   #10
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Your bioload will play a part as well. 2lbs per gallon can be hard to do IMO. I felt like I was stuffed with rock in my 75. I try to keep as much as I can in the sump now ...
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