The Brightwell MicroBacter Dry Rock Bacteria Starter Kit is crafted to initiate and cycle a new marine aquarium using dry rock or synthetic rock along with dry sand, in the absence of fish. This comprehensive Starter Kit contains: - A 2 oz bottle of MicroBacter QuikCycl Ammonia Nutrient for a Fishless Cycle- A 125 mL bottle of MicroBacter Start XLM- A 500 mL bottle of MicroBacter CLEAN MicroBacter QuikCyclExpertly formulated nutrients to support fishless cycling and to develop robust nitrifying bacteria populations in both freshwater and marine setups. MicroBacter Start XLMA potent 15x strength live tank starter nitrifying bioculture, designed for quick cycling of new marine fish, reef, and brackish aquariums, offering greater stability in temperature and shelf life compared to similar products. MicroBacter CLEANA specialized blend of microbial cultures and enzymes aimed at cleaning the surfaces of live rock and other aquarium components effectively.