Hello and welcome to 420 , your plants look good but judging by your pics i dont see any perlite in those pots , when growing in coco you need a 60 % coco and a 40 % perlite mix , this allows oxygen to get to the roots and it must be watered daily and the bags (pots ) must have lots of holes in them , i always grow in cloth pots with coco ,these allow a good water runoff , i keep my ppm of feed around 300 ppm and feed every single day and a ph of 5.8-6.0 ph , when growing in coco ph is very crucial , not sure if you have a ph meter (pen ) and a ppm pen (meter ) as far as i am concerned these are a absolute must when growing in coco , you can purchase these on line (amzone )$50 bucks each , , temps 72-75 and humidity 50-60 % in veg stage and less in flower phase , leaves that yellow will never come back green again just watch the new leaves on the top of the plant , they will tell if you have hit the sweet spot for your plants , burnt tips , yellowing etc , yellowing means they need more of something and brown -burn means they have to much of some thing , this is just a general rule only , leaves should be pointed straight out , trying to gather the most light they can , droopy leaves are not what you want , in coco droopy leaves means more water as long as you have a heavy air exchange (lots of holes in pots ,you cant have to many of these ).plant stakes should be put on the outside edge of the pots (bags )4 is the max you will need and should be put in the pots prior to placing in the plants you run the risk of damaging small tender roots afterward , i grow in nothing but coco and love it and have had many of great grows , but every plant does come with its own set of small problems , thats the fun in growing -learning to read plant language , you will become bilingual after this -lol and have a great christmas and new year !!!