Available at https://www.thingiverse.com/thing:6097109/files

A safety clip to attach at the joints of a PointFour brand diffuser to help ensure that the sections won't separate accidentally.

Print in PLA with 90% infill. Also, scale the print to fit the point4 diffuser snuggly from your printer. On the Ender7 I use 103% for a snug fit that can be removed without breaking the clip. 

If PETG or other plastic is used you may need to adjust the infill level and test bouyancy. 

The clips should be printed with a high visibility color such as orange so that if they come loose or break they will float to the surface and be easily spotted in the tank.

Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
This is a human-readable summary of (and not a substitute for) the license. Disclaimer.
You are free to:
Share — copy and redistribute the material in any medium or format
Adapt — remix, transform, and build upon the material
The licensor cannot revoke these freedoms as long as you follow the license terms.
Under the following terms:
Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.

NonCommercial — You may not use the material for commercial purposes.

No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
Notices:
You do not have to comply with the license for elements of the material in the public domain or where your use is permitted by an applicable exception or limitation.
No warranties are given. The license may not give you all of the permissions necessary for your intended use. For example, other rights such as publicity, privacy, or moral rights may limit how you use the material.