It may be ready for the trash can. Depending upon the
juice you were using in it, a week may be all you'll get from one. I've used a couple of the XXXXL Smoktech dual coil mega cartos on my BB and SB
mods. I was generally pleased with them. I got at least a couple weeks use, refilled a couple of times each, but I also was using several carto
tanks in my rotation.
Thicker, darker-colored, or mostly VG juices will end up clogging up the polyfill of any carto faster than your clearer, lighter-colored, and mostly PG juices will.