Reef safe putty/plastic that doesn't set hard?

[OriginalUserName]

I'm looking for some sort of putty that is reef safe but that doesn't set very hard. Think of something like plugging a hole with some bubblegum. I have a gap between a filter basket I want to plug but want to be able to remove as needed.

I have to assume there is something I can use. Do they sell unflavored natural rubber bubble gum? lol

 

[Reefer Reboot]

Google Aquascape Fix.