Rounded second leaves on seedling

Exactly what are u talking about mate. Do u mean the 1 fingered leafs? I've no idea wat u talking about. As there's absolutely nothing obvious issues wise I can see. These 1 fingered leafs are exactly what happens during plant stage through development BTW. When you get a few sets of nodes..near day 15 or so u can remove thesw 1 fingered leaves as they usually grow below and out-shadowed by the sets above as they have 3 fingers on their leaves and block whsts below. So remove them when your plant has new sets to sustain growth.. Also I c the leafs showing some signs of needing feed or they're in difficulty

judge it after the 3rd set (including cotyledons)... early leaves often have blemishes and oddities. If they do, they usually shape up after 3rd or 4th set and clear sailing from there.. assuming providing well for them. at this point just focus on general health.. it's growing, decent internode legths... good enough.

Don't worry about the form of leave tips, it changes. Especially early leave sets will sometimes look a bit different. If you have problems growing it, change the strain and see if the problems presist. If your problems continue, it's not the strain. Every strain is a bit different and some will just not grow that well in your environment.

There is absolutely nothing wrong, this is exactly how some cannabis seedlings grow. You have nothing to be worried about. It will not affect anything.........growth rates, yields, potency, health.........nothing.