You said thier in soil and there 1.5 weeks from pop(seedlings)??
If thats the case and the soil isnt all used up from some previouse
dont even water it much yet and you shouldnt need anything bigger
then 16 oz Solo cup.(actually even if that soil has no nutes leave it alone light ph 7 water only)......
maybe in a week or so transplant into nuted soil still just water for week(ph 7)
a 2 gal pot should be good for 2 weeks til nutes subside 9then start 450 ppm work up 50 ppm
every 3 days till top around 1000ppm 5th week bloom
Drop ppms down slowly 6th 7th flush with clearex or equal 8th -- 10th week (done) hang it trim smoke it..................................................
Verry important unless your rocking at least 400 MH watt you shouldnt need to water a 2 gal pot more then every 3- 4 days
Believe it or not if you dont deviate from what I just said youll have bud to smoke(unless your runin verry low watt)in which case I would say,,, dont know what to tell you accept DONT BOTHER IT WILL BE MORE TROUBLE THEN END RESULT IS WORTH!!!
Anything under 250 watts IMHO is a waist of time UNLESS you have verry low standards and expectations when it comes to bud
and thers nothin wrong with being a occasional smoker(wish I was).................................
And your lemon Haze should go from 12 in to 4 ft from start of 12/12. If you plant grows well that should be no longer then 2 weeks from now also once at 800 ppm I would chill for a min untill begin of 2nd week 12/12 then start your bump back up to 1000 ppm dont deviate gen rule I follow is 100 ppm for every week of life that always has me around 600 ppm start of 12/12.
And I happen to know for fact your strain is light feeder also low yielder but supposed to be AAA bud (I never personaly but seen trusted grows and reviews (not for nuthin you should have already done all that searchin shit ya know??) just try to give you. the harsh facts so you get on point fast no harm meant ..