well throw out the worse looking one and replace it with a new one?? im using miracle grow and it's very healthy. the rumor about the THC well.. let's see in 2 more month.
if your not sure if your overwatering it or not then here is sumthing to simple things out for you. from seed till at least 5 " water it every 2 day with half a cup (half a white standard foam cup not that extra large mcdonald cup) once it get pass 5 inch then add a lil bit more to wet the soil completely. the trick i do is not to pour it in the soil slowly because it'll drain down one spot, but to just drop the whole load of the cup completely in the pot so it makes a small flood and wet the soil down completely as it drain. then every 2 days the same thing. it's always a good idea to put ur finger in the soil to feel if it's still wet. if u can still feel a bit wet 2 inch down the soil then look at the leaf. if it's still droopy then i'lll wait another day or 2 before water. my plant grew healthy the whole way with only 4 bottom leaf turnin yellow *which is normal*.
btw alot of people on RIU make growing sound like a rocket science like you need all type of gadget and nutes.. unless you are trying to win a 1st place MJ gold CUP you could relax a lil bit with all the nutes crap. you will need nitrogen later when the bottom of the plant start to lose it's color but in the meantime focus on getting these lil babies healthy naturally. from seed till flower i keep the lights on 24/0. everybody has their own ways of doing things but this work 100% great for me.
good luck.
