yup, same symp's as nitro. def.
iv had the same problem with mine but it went really bad n killed everything. i was nutin n all.
hopefully urs wont do like mine,
have u folier fed them wit anythin? n wt nutes do u use?
plants telling you she needs some food, give her 1/4 strength grow ferts, when the plant gets light like that thats the sign to feed, when she gets dark green almost blueish its too much