API Stress Zyme 237ml

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API Stress Zyme contains over 300 million live bacteria per teaspoonful to consume sludge and reduce aquarium maintenance, keeping your aquarium clean and improving the natural aqu arium cycle. Making Stress Zyme part of your tank’s regular upkeep routine assures an active biological filter, a cleaner aquarium, healthier fish, and good water quality. This product may be used in both fresh and saltwater aquariums. DIRECTIONS FOR USE:Add 1 tsp. per 10 gallons of water weekly. Show more