hell dude guys start seeds on 1212 all the time so i think itll be fine jus it wont be as big (prolly) as the other on and dont worry about tips of the plants burning they do that so easy anyway its when large section is in trouble, any thing more than the tips ie color change shrivling and etc , yes you need to watch the tips but a lil bit brown isnt gonna kill it, yeah a super healthy plant wont have that but yeah they are lookin good man