new tube or not

So i got a puncher on thursday evening and repaired the tube but it seems i’ve got a “very slow leak” should i just buy a new tube or mend the tube again?

I have the tyre/tube at 100psi is that to much pressure for a repair patch?

cheers

Buy and use a new tube. Keep the old one as a spare. Sorted!*

*Unless it’s an MTB tube which means you just probably didn’t apply the patch well enough.