Cold Water liquid pond bacteria is scientifically blended and tested to produce maximum results during cooler pond water temperatures. During the spring and autumn seasons there is extreme nutrient loading in the pond as trees and plants in and around the pond are dropping organic material into the pond. AquaClearerTM Extreme Cold Water contains a proprietary blend of microbes that are effective at accelerating the digestion of this organic material at the bottom of the pond. It is also excellent at reducing ammonia, nitrites and excess nutrients that would otherwise cause poor water quality and clarity. Specially blended microbes for cold water in the spring and autumn. Great for seeding pond filters in spring. Safe for all pond fish and plants 71 oz. treats 24.000 gallons. 5 lbs. Regular price: $52.95PondDepot.com Sale price: ponddepot@msn.com Copyright - All World Rights Reserved Pond pumps, Pond Kits and Pondless Waterfall kits, Underwater Pond Lights. Aquaclearer Extreme bacteria and String Algae Buster and pond fish food. Pond Depot provides Do-it-yourself pond kits and Pondless waterfall kits delivered right to your home at great prices! Thank you for shopping at Pond Depot you online pond superstore!