The previous owner of my sump had velcro in his sump for years holding probes to the side wall..
or you could just get some of the velcro that is double sided that doesn't have adhesive (I've got about 9' of it in a roll that I bought from REI years ago) and silicone it in place..
or you could just get some of the velcro that is double sided that doesn't have adhesive (I've got about 9' of it in a roll that I bought from REI years ago) and silicone it in place..
