I had one similar, Ace modded it. It is a maxijet 1200. He took an airstone and a piece of large (1.5") tubing. Cut the tubing at about 5 inches. dangle the airstone through the top of the hole and put the inlet of the maxi in the same hole. Pull the airstone close to the inlet, leaving as much tubing as possible to act as a shroud to keep the bubbles from escaping. attach an air pump and viola!

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