Turn pond water a striking shade of mysterious black with precision AND at a smart price. Pond Logic Black Pearl Defense Black Pond Shade is a safe, nontoxic colorant available in an easy-to-dispense dual spout bottle. One spout is well suited for dosing larger volumes of water while the second spout allows for precision dosing ideal for smaller ponds or to fine-tune dosage. Graduated markings allow careful measurement so you can accurately achieve your desired shade of black. Protects pond fish from harsh, penetrating UV sunlight and provides a dark background that highlights and accentuates brilliantly-colored goldfish, koi and other pond fish. Safe for fish, plants, birds, pets and wildlife. Will not discolor ornamental aquatic plants or fish. 16 oz treats 1,000 gallon ponds for up to six months.
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