Dolomite buffer in new tank - The Planted Tank Forum
 
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post #1 of 2 (permalink) Old 01-07-2012, 11:33 PM Thread Starter
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Question Dolomite buffer in new tank

Hi all, just need some wisdom regarding my setup for a new tank.
I'm looking at setting up a freshwater planted tank, using spagnum moss (from New Zealand, not sure if that would make a difference http://ferngardens.com.au/products/sphagnum_moss) and seachem flourite black as the substrate.

I plan to be using pressurized CO2; which has me a bit concerned that with the peat acting and a negative pH buffer, and the CO2 acidifying the water, that my pH will be quite low.

Would using a layer of dolomite in the substrate counter this? and if so, how much should I use? Or is there something that would work better (coral sand, shell grit etc)?

Cheers,
Matt
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post #2 of 2 (permalink) Old 01-08-2012, 03:12 AM
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Dolomite dissolves very slowly in water, compared to different forms of calcium carbonate, like coral, shells, chalk, etc. For that reason it could work much better as a buffer than would calcium carbonate.

Hoppy
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