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High efficiency white light quantum boards
and then use the zipper closure to open and close your bag over and over again
you will totally eliminate the use of salt and wastewater that comes along with backwashing
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NPK Industries RAW Calcium/Mag 2lb Reflective & Greenhouse Films High efficiency white light quantumDescription NPK RAW Calcium Mag 2lbs NPK RAW Calcium Mag 2lbs: RAW Calcium Mag contains 15% calcium and 3% magnesium. RAW Calcium Mag has optimized the ratio of each element in a Water soluble formulation of calcium nitrate and magnesium sulfate so that it doesn't leave the media salty. This product is a stand alone Calcium Mag supplement. Due to its low dilution rates a little RAW Calcium Mag goes a long ways. Its also ideal for preventing
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