D-D Fluidised Reactor Kit with Pump FMR75Deltec FMR75 Fluidised Reactor with pump The FMR75 Fluidised Reactor has been developed by D D to give the ultimate affordable solution for fluidising a whole range of materials that are used on your marine or freshwater aquarium. There are many smaller reactors on the market that look good, are attractively packaged and well priced, but when it comes down to using them the customer has not been considered. D D have spent a lot of time listening to