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