Kyto-Cal is a proprietary mixture of dehydrated, crushed, and screened crab and shrimp shells/meal. It has a fertility analysis of 3.5-1-0, and also contains 8% Ca, 16% chitin, and 24% carbon. It is a valuable addition to any organic grower. It supplies valuable Calcium, Nitrogen and most importantly Chitin, which will in turn promote beneficial soil biology that eat chitin, which in turn will help protect the plants from chitin organisms. Crab & Shrimp Kyto-Cal Shell & Meal contains many food substrates for your soil biology and may help reduce stress for your plants. Crab & Shrimp Kyto-Cal meal should be used at least twice a year to help promote a healthy soil for your plants all year round.