if you use hxtal this will not happen, and it will not show under a black light
it is a lot harder to use then resin or a fast drying epoxy. and the lip you show would take me a month to repair and cost 200 to do.
This is the cuprite, bought at home depot.
Power Poxy "Super Epoxy" says Dries Clear.
It's in the double push tube which applies hardner
and expoxy together at same time.
Dave