edges of the leafs curled on some

I would check:

height of light
nutes
temps

height of the light can cause curling due to the heat that it radiates. if the entire grow is to hot then you will have to improve your ventilation system

as far as the nutes go, i usually look for brown or yellow spots as well as wilting.

 

Nutrient overdose usually curls the tips of the leaves under like a rams horn. Heat stress usually curls the tips and the edges of the leaves up. If it is over nuted flush the pot next watering. If its heat stress then check the distance of the light and room temps to make sure they're around 72-78º F and not going near 90.

 

However, a picture would have made the call easier. m3kgt is right, but it also could be MG def.

 

A Magnesium(Mg) def can show signs of upward curling leaves in the 4th to 6th week of the deficiency progression. Although sometimes with Phosphorus(P) and Sulfer(S) deficiencies the older leaves tips hook downward. A Potassium(K) def. can also show signs of leaf margins turning grey and progress to a brown color where the tips curl upward. All this means nothing if we can see the state your plant is in.