Keep stock tanks clean and debris-free with easy-to-use sinking tablets. Stock Tank Defense contains all natural, beneficial bacteria, specially formulated to improve drinking water quality for horses, livestock, birds, and wildlife. Simply toss these easy-to-use sinking tablets into any stock tank to help quickly dissolve muck and organic waste and to keep tanks clean, clear, and healthy. 6 bi-weekly doses treats stock tanks (up to 150 gallons) for 3 months. For best results, do not use with chemicals.
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