You should grab a copy of Jorge Cervantes book Indoor Marijuana Horticulture. It's for photos, but the same basic principles apply. IMO, photos are easier to grow as well, and they are dramatically cheaper as you can take clones. You do need a second tent/closet though and another light. Another thing, these fly by night Chinese lights are garbage. I don't for a second believe any of their claims, and most of em can't even write English. If they can't invest $50 for someone who speaks English to write up their website/Amazon page...ya gotta wonder. Same with the reviews. Not buying em. And then there's the Blurple color they throw, that's not natural. Just this week, I've seen two incidents with those kind of lights right here on AFN. First one was some guy with about 6 or 7 cheap weird lights wondering why his harvests were so small....and the other pulled his light apart (to upgrade to COBs) and found out the driver is only pushing 12v@800ma. More like a cell phone charger than a light driver. That only makes 9.6watts. That light said something like 400w on it. Nope. Less than 10. What are you doing for a grow area, ventilation, RO water, humidity control, and what breeder are those seeds from? Not all breeders are equal. I would suggest some Mephisto for some easy to grow autos. The environment is everything. Literally. Skip the whole paper towel method and use starter plugs. One seed per plug. Ya gotta isolate things. Then things will start to be more apparent. You got a pH meter? There is another HUGE part. It also has to be accurate, so a second one isn't a bad idea either. To do growing right isn't cheap. At all. Ya gotta spend money to succeed (to a point). Hope this helps, it's just really hard to isolate your problems with so many variables.
There called KAAHBS Joe