Red Sea Reef Foundation B Alkalinity (KH) Supplement, 1000ml - Boosts CarbonateProduct Description 1 Ltr Red Sea Reefer Foundation B Alkalin,based of years of biological analysis of corals and what they intake when they grow,Using ultra pure raw products,Red Sea has packaged the additives in ready to use bottles and jugs that you can dose directly out of with no mixing required,Reef Foundation B Alkalinity Specifications model 730773220243 style Classic material magnesium itemWeight 2. 93 pounds partNumber 306168 manufacturer