Carbolit Reactor, Aqualine Buschke. The Carbolit Reactor is a compact chemical filtration chamber for aquarium use. It can be installed in-line with any standard canister filter or used with a separate pump. The Carbolit Reactor contains one liter of pH neutral Carbolit. The Carbolit Reactor can be used for fresh and salt water aquaria. One filling lasts, depending on the desired use, between 10 days (removal of medications) or up to 12 months (long-term use as biological filter) in a 100 gallon aquarium. Dimensions - total length is 14 inches and the diameter is 3.2 inches. The hose connections are 3/4 inch.