An extremly clean grow room and plenty of oxygen for the roots and stem is all you need. No nutes,no superthrive,no cal/mag,no watering untill the pot is BONE dry,hell you dont even have to PH. Just leave it alone as others say! Ironically plants left the fuck alone usually come out better then those fucked with as a seedling.
lmao . . . . not half the seedlings I've seen recently in posts here dude . . . . . .
~_
Most of the professional growers here do not touch they're seedlings! I used to try all kinds of shit to seedlings. I even had a few seedlings i used superthrive 3 times in veg and once as a seedling, those 3 super silver haze seedlings did not taste or look like its sisters, they did not grow as tall, they tasted slightly different and even took longer to mature! But i understand what you are trying to say. Do you have any seeds you can experiment with? Try it
spray bottle light waterings of growing autos starting in finishing bucket never over water root rota a bitch
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leave it alone