For use with a dosing pump, these containers have been specifically designed for use in the balling method of supplementing a marine aquarium with calcium, magnesium, alkalinity buffers and other elements. (Can also be used in freshwater aquascapes and planted aquariums for macro and micro element dosing.) The pipes are the correct size so ordinary aquarium airline can be pushed on to provide a secure grip straight from your dosing pump (we recommend silicone airline). They give a professional look that you don't get from plastic bottles and are very user friendly as the top just pulls off easily for refilling. The suction from the dosing pump doesn't allow any liquid to drip out when you remove the pipe together with the lid. Perfect for people who are limited with space inside their cabinets. Each container can easily be completely dissembled for easy maintenance and cleaning etc. Available in 3 sizes 0.6L, 1.5L and 2.5L
