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Hydrotech 600w HPS Magnetic Ballast New 4 teaspoons (20 mL) per Grow Tents 4 teaspoons (20 mL) per gallon (4 L) of water every other watering and allow plants to cleanse themselves of stored nutrients before harvest Ballasts are quad tabbed with line voltages of 120v Hydrotech’s High Pressure Sodium ballast kits come ready to use complete with 11′ lamp cord with mogul socket and 8′ power cord
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