Grape Lime Ricky pheno hunt

Week 2 after germination... only 14 out of 20 seeds popped. These were by far tge smallest seeds I've ever germinated (so small.i thought they might be premature). I usually have about 90-95% success with seeds so this was a bit disappointing. I've started feeding clonex solution at 20ml per litre before they get transplanted to 1 gallon pots in a mix of 50% super soil and 50% sunshine mix.