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Old 01/12/2008, 09:57 AM   #1
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Join Date: Oct 2004
Location: Charlotte
Posts: 2,094
Phosphate from cement/concrete block?

I know DIY rocks are commonly used... but I plan to build large liverock formations using cement blocks and hydraulic cement.

Any chance the blocks might leach PO4 or other harmful compounds into the water?

Last edited by shelburn61; 01/12/2008 at 10:03 AM.
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Old 01/12/2008, 11:21 AM   #2
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Join Date: Jan 2005
Location: Tulsa
Posts: 4,249
I have had no problems but I only have about 30 pounds of it in my tank.

Oklahoma Marine and Aquarium Society

Support your LFS and your local club.
Jarrod Lee

Current Tank Info: 110 reef with a 55 gallon sump,3 metal halides
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Old 01/12/2008, 03:22 PM   #3
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Join Date: Mar 2002
Location: Mountain View, CA, USA
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Cement and aggregates might contain some phosphate, but I haven't heard any instances of that occurring to any measurable extent.

Jonathan Bertoni
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Old 01/12/2008, 03:25 PM   #4
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I have had no problems.

Just when I thought you couldn't be any dumber you go and do something like this....And totally redeem yourself!

Current Tank Info: 20 gallon
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Old 01/12/2008, 11:23 PM   #5
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I was thinking of doing the same thing...i thought for sure it'd be a prob. but thats good news then.

MMMM saltwater.

Why can't coral tanks be more like Turbo -Engines ?
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