pH of pour thru 4.5...how to increase?
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Should I increase pot size for Cym and if so how much? pH of pour thru 4.5...how to increase?
 
 
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Old 09-13-2010, 12:02 PM
Royal Royal is offline
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Join Date: Jan 2008
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Location: Piney Woods of East Texas
Age: 47
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Different forms of Nitrogen can have different affects on the substrate. If I remember correctly (not likely), the uptake of ammoniacal N reduces pH of the medium while nitrate N does the opposite. I may have this mixed up, but I do know that the source/form of nitrogen has residual effects on the substrate. It has something to do with the ions left over after plant metabolism.
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