MTM nozzles from Mazzei are like little eductors that screw into regular PVC threads. Mass Transfer Multiplier nozzles work very much like an eductor to convert high pressure water flow into more water volume movement but the Mazzei MTM nozzles use no flared trumpet and are way more discreet to use in a display aquarium. The smallest MTM nozzle is still 1″ thread and requires pressure differential of 5 PSI and 400 gph or greater to achieve high MTM rates so these are definitely not well suited to smaller aquarium sizes. Also, without the a flare to disperse the water jet into mass water movement, you’ll likely need at least 18-24″ of empty space for the jets to decompose into more suitable aquarium flow, the kind that doesn’t immediately shatter your precious fuzzy sticks. These jets would be perfect for producing gyre flow in larger aquariums and encouraging more mass water movement from a high pressure closed loop system. So far we’ve only seen the jets available from Aquatic Ecosystem and for more information please visit the Mazzei website on MTM nozzles. Something also tells us that an enterprising DIYer could re-purpose these air and water mixing MTM’s into the perfect air injection nozzle a-la AquaC protein skimmer, we hope they send us pics of the first MTM protein skimmer.
