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sera KOI Professional Spring/Autumn Food considers the special nutritional requirements of Koi and other pond fish at temperatures below 17°C (63°F)
and subsequently address
Size or frequency of dose may be increased if dosing regimen is insufficient to maintain calcium and alkalinity in these ranges
advanced impeller
Triac equipped thermostat
Fritz Pro Carbon AP 1.75 lbs Tidal 110 Carbon sera KOI Professional Spring/Autumn FoodFritz Carbon AP is a high quality, 4 mm pelleted activated carbon ideal for use in fresh or saltwater aquariums with all types of filters. Fritz Carbon AP removes dissolved organic compounds (DOC), agents that discolor aquarium water and cause odors, chlorine and chloramines. It will not leach phosphate into the aquarium. Produced from Bituminous Coal. Will Not Leach Phosphate. Large Surface Area Over 300,000 Square Feet Per Ounce. 4 mm Pelleted