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Eddy, Carl...thanks.
carl, I only use carbon every so often.....maybe 4 or 5 month or so if I think there is a yellow tinge in the water.
The cannister filter in the TOTM pics of my sump was running filter media as that picture was taken at the time I was setting up the refugium. I was trying to remove some of the sand dust.
Nitrates and Phos are zero, as near as I can tell.
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Paul W Whitby Ph.D
President Central Okla. Marine Aq. Soc.
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