The Planted Tank Forum - View Single Post - How long does dirt last?
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Old 02-03-2013, 05:43 AM   #3
Algae Grower
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Join Date: May 2011
Location: USA
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I guess the dirt has been there for a long time since it's in the back yard. I used a post hole digger for the clay about 3-4 feet under that. The dirt is capped with pea gravel so any liquid ferts or waste from fish get down to the dirt. I recently been making some DIY root tabs with my liquid fertilizer and soaking it into clay and letting it dry.
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