The Planted Tank Forum - View Single Post - Where to get KNO3
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Old 01-21-2013, 10:40 PM   #8
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My potassium nitrate is in an old Green Light Stump Remover jar which I bought at a good nursery, HD and Lowe's don't carry it. Be warned, it costs twice as much as buying online. My jar cost $8 for a pound and online it costs $3 a pound.
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