Danylo Say what you will about the indica vs sativa stuff but when selecting seeds I tend to go for the chunkier ones hoping for a more indica-leaning pheno! (Yes, very scientific! 😛)
I have read about larger seeds needing a little more time to germinate, which makes sense - because the larger the seed, the larger the distance from outside to center of the seed.
They were all on the chunky side, but I took the biggest of them and despite the size/germination-time relation this one (along with the Chemdog) smashed my previous "first water contact to poking through the soil" - record by almost ten hours. 64 hours is all it took, crazy.
I think it's at least partially due to the relatively warm 23.5-24°C (~75°F) temp they got during this time.
Method stayed the same : Soak for about 24 hours in 1% H202 solution and then directly into low nutrient soil.
Despite selecting the larger seed she appears to have somewhat narrow leafs which usually indicates a sativa-leaning phenotype. I recently had a lot of luck with a Lemon Z sporting a comparably sativa pheno (in reference to the more indica-leaning one I had a while before) so this is going to be exciting!
[Personal note:] I just love growing from seed! .. every resulting plant and it's growing experience is a little unique 😍