You probably posted this previously but what soil mix are you using? Nutes? Just curious. I'll start with a seedling soil and then move on to stinky's recipe for the rest of the grow - 2 parts agway manure humus : 1 part perlite together with PureBlend grow and bloom (for soil).

Also, what size are your pots and are you following a re-potting schedule? I understand that this is an important factor when doing a soil grow. I'm figuring on two re-pots - starter pot to 1 gallon to 3 gallon which will last through flower. Re-potting allows the roots to fill out a pot and bulk up before moving on to a larger pot. The new soil gained during the re-pot provides clean medium and aerated soil for the roots to expand into. If you start in a pot that is too large the plant spends a lot of energy and time growing under ground. A smaller pot allows for balanced growth - roots and canopy.

You likely know this. Just sharin' my 2 cents.