I popped a WCOG and I guess it was "slower" to pop, but I mean maybe day 3/4. I plant my seeds directly, I don't fuck with them, I also don't get my grubby hands on the seeds while sowing. I'm assuming all of you aren't 1st timers and have had many sprouts from seed. For me 2 days is fast, 3 days typical, 4 days + I start to wonder whether I planted too deep, or if the medium stayed moist enough, I check humidity, pest like fungus gnats etc. Any longer than a week I'd dig it out and examine the seed itself and chalk it up as a dud.