Need a little advice.

Hey guys, I have plant and she's been looking great except for a little yellowing and browning. I think it is definitely a nute deficiency and it is also on mostly the lower level, there doesnt seem to be a lack in new growth or stunted growth. Any help is appreciated.

Alright this is what I am working with:
~growing indoors under a 1000watt hps
~water everyday
~soilless medium (perlite vermiculite peat moss)
~7 days into flowering

Feed with some Calmag

I wouldn't worry about it the plant looks good. I do watering everyday is excessive however.

Are you feeding her at all? What water ru using ro? Any chance some of the spots are from splash?