Precision Marine is releasing a new dosing reactor for the space conscious aquarist. These reactors, called the “Dosing Drumms”, feature nylon thumbscrews that interlock into the bottom of the reactor above. John Guest fittings are also utilized, allowing aquarium keepers the ability to connect tubing from the reactor to your aquarium, or even to another reactor. These reactors would be great for just about any dosing methods, including two-part calcium and alkalinity dosing. The PM Dosing Drumms are still in their prototype phase, but they should eventually find their way under the aquariums of hobbyists in a short time.