so yeah i have 7 plants that are all about 8 or 9 days old and 3 of them are doing fine but the other 4 are greeen but the cotyldons are startng to turn yellow and the first set of true leaves are curling ive had 5 good crops so this isnt my first grow just need some advice of what sounds like is going on or what they need? thanks for reading.
need a pic but anyway what way are they curling if up may be p def if like taco mite be ph is to high check ph and let me know happy to help http://www.icmag.com/ic/showthread.php?t=11688