First try with ak-47a Bruce Banner #3 NL

Leaves dried out a bit on the bruce banner (top right). I looked it up and it might be a gnat infestation but I don't see any flying around. I don't think it's under-watering since the medium isn't dry very often. The top left, northern lights, is also getting yellow leaves. This might be nutrient burn or gnats. No idea. I hope they can live long enough to transplant. I'm p;planning on doing that asap into some 1 liter bags. Not great week and they seem small. The two little guys were also germinated about 5 days late since the first batch didn't take for whatever reason.