Mounting a gyre/pump without magnet

[reelss]

The left side of my tank sits against a wall without any clearance. I would like to place a gyre (maxspect) there, but obviously cannot use a magnet on the outside wall. Are there any solutions to reliably keep the gyre in place? Suction cups? 3D printed solutions? open to ideas.

Any help would be greatly appreciated.

 

[FUNGI]

https://www.walmart.com/ip/FloraCra...MIvMr-uMjYggMVvKJaBR2i5AECEAQYASABEgLqmvD_BwE
Use heat gun and make the hangter smaller so its a tight fit on teh aquarium.....use epoxy to adhere the power head to the holder..Use 2 one on each end..perfect HOB solution