So, I've started growing in tents.
Got sucked into buying many bottles of stuff. Really there's no need.
Green House Feeding Bioline will work a treat for you. Or even there mineral line.
As for controlling your grow, top early. And then re top the nodes to make her have more girt to fill out your tent.
As for your feeding again. There's so many ways to go.
Me, I prefer the kiss method (keep it simple stupid) as messing around with bottles, and many liquids, is annoying.
As for keeping the top of your soil wet, as suggested. I'd strongly disagree.
Growing in tents. Is not like growing outside.
Pick 2 pour points a few cm away from your stem. Pull back a bit of dirt pour water on it. And allow it to leak down into roots. As why would you keep the top wet, with light spray. Roots grow below the ground. So, all your doing by doing it that way. Is increasing the risk of gnats, damping off and that, is something you don't need to do. A young plant, for the 1st week or so. The roots are close to the stem so once you pour some water near your stem, (making sure not to wet around the stem) this will me much better. And having the top of your soil wet all the time, will cause issues of its own. Will help keep a high RH that's about the only benefit.
Good luck.