Black Onyx � lake and pond colorant creates a dark, reflective look in decorative lakes and ponds for a stunning appearance. Black Onyx colorant is convenient for every water feature. Apply liquid directly from the container, near the shoreline. Use Black Onyx colorant in conjunction with Lake Pak � WSP biological clarifier for an effective nutrient management and water clarity improvement program. Application Rates: Apply 32-64 oz. per surface-acre of water four (4) feet deep. Or 2 oz. per 20,000 gals of water
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