Aquarium pump holder HL-BT400

The pump's suction cups don't hold it up because of the vibration from the motor. With this extension I am able to add an other suction cup, above the water (awsc). If this awsc will not hold it either, then I will add some glue to it. Adding glue to awsc instead of the existing ones makes more sense, because thisis above the water, and glue does not get in the fish's environment.
UPDATE: the first one broke, so I added some reinforcements.