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77 EC calibration solution (50ml bottle)
Engineered for moisture retention and aeration for optimum rooting and growth
With an interchangeable outlet fitting
Crucial secondary trace elements enhance photosynthesis and respiration
Active Aqua 55 Gallon Drum with Pre-Drilled Locking Lid Insecticides 77 EC calibration solution (50mlThis high quality 55 gallon drum is black in color and comes with a pre drilled solid cover and bolt ring closure. It is perfect for use as a reservoir for larger hydroponic systems. The pre drilled holes can be used for the grommets and barbed fittings necessary to outfit the drum with tubing for filling and draining. A larger hole can also be cut in the cover to act as a port for adding nutrients, checking pH, etc. Features 55 gallon nominal
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