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Old 01/07/2008, 09:51 PM   #1
fishymann
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adding diy rock but not as filter?

i know there are a lot of threads about DIY rock BUT i want to build a structure (mostly out of pvc nd egg crate and covered in DIY rock mix (sand+concrete) and take my current 55lbs and put it ALL in my sump which is full of bacteria and is being currently used. would i have to cure the DIY rock or just get it sitting long enough to not mess around with the PH of my water? how long would that probably take?


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Old 01/09/2008, 02:41 PM   #2
fishymann
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ANYONE?


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Old 01/09/2008, 03:24 PM   #3
shyland83
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i'm pretty sure you need to cure it in fresh water for months doing frequent water changes in order to get the ph down. i think some people soak it in muriatic acid for a short period of time to speed this along. but i've never done it so i'm just remembering what i've read.


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Old 01/09/2008, 03:31 PM   #4
AquariaOCD
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Curing man made rock is necessary to prevent ultra high ph from leaching into your tank (from the portland cement), not because of a cycle. But yes, you will have to soak it fresh water for at least a month to keep the ph from nuking your tank!


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Old 01/09/2008, 03:34 PM   #5
not_sponsored
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are you going to light your sump to grow coraline on the live rock?


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Old 01/09/2008, 05:02 PM   #6
lakee911
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Some people put it in their toilet tank for a few weeks. Easy water changes


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Old 01/10/2008, 07:20 AM   #7
neo1013
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I did the man made rock thing, abot 100 Lbs worth. I put it all in my display, and not 1 year later you cant even teel it is man made. I saved a bunch of money by using cement.


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