I would highly recommend you clone those plants a little later on when there bigger. This way that $120 goes a long way. I like to use a clone machine. But you can make a clone without a cloner.
Heres my cloning thread. But i would suggest you read up on cloning a little because you can make more of the same plant before you flower it. Because if its really killer weed then its nice to have another plant. And having a clone as a backup in case you screw up the grow is easy insurance in case and a second chance to grow the plant again. Sometimes you dont know how the strain will react to your environment. Factors that are major are what part of equator did these seeds originate from. And are the seeds produced indoors or outdoor? And growing strains that you have never grown can be a little tricky thats why clones are important. You basically get a redo…and you should also be keeping some notes on what your doing so you can see where things change or go wrong or right. Takes some practice learning a new strain likes and dislikes and feed ratios. And it looks to me like its over watered and that pot you have doesnt drain well enough. Youtlr going to get nutrient build up in the root zone and its burning the roots and not allowing the proper air to the roots because water is getting trapped in the pot and not draining out. But i cant see your whole set up because you just have leaf pics. But it looks like you need to also be watering to run off and at least once a week only using water and no food. But we really have no idea what your growing parameters are???
We need more info man! Here what we want to know or its hard to help you.
Well help you out but we need as much info as we can get. I really want to know what those pots are and the soil-media your using and what nutrients, like brand and are they liquid or powder mix into water?