Brown spots on leaves.

Hi everyone! This is a leaf of one of my girls named Papaya from Nirvana seeds. She was originally grown outdoors in a 15 gal pot. The grown medium is FFOF. She is now put into the grow tent. The grow tent is 4x4x8, 1000w HPS, and 6in inline fan cooled. The temp is typically 75-80 when the lights are on and the humidity is about 70%. I live in Colorado and its typically low humidity, but with all the rain it made it go up. Her weekly watering schedule is as following: I water every other day. I use reverse osmosis and to supplement the cal mag, I use 1 tsp cal-mag extreme with every watering. Day 1 I use Canna Terra flores (19ml to 1 gal) ph'd to about 6.8. The next watering I give her 1 tbs per gal of Grandma's unsulphured molasses. The last watering I give her 9 mls per gal of Cannazym and then the cycle continues. I typically give her 2 gal when watering. The stage of growth is flowering. She started to flower somewhere about mid August. The entire plant's leaf has not turn into brown spots, but a fair amount has. I want her to grow to her full potential, she is quite frosty and smells like ripe papayas!

Are you following suggested dosages when making nutrient mix also maybe check their websites sometimes there may be more info about it? I just had some plants that looked similar and I was under-dosing on 2 parts of my 3 part mix by 30% or so. I could be way off base but I would check that and pH.

I guess im suppose to give 23ml per gal. Do you think that will do it?

here some more pictures if it helps.

well I think I came to the conclusion, I just checked my run off ph and it was ph of 8.. Should I flush it for a week or topsoil with dolomite lime??

Any suggestions anybody?

Dolomite lime to lower pH?

looks like phosphorus deficiency to me.

You're in ffof and adding nutes? You've prob locked it out. Just flush the shit. See if it changes in a week. I've learned in my short stint growing less is always more with cannabis. Just flush it first, before you ever add anything.. And especially with ffof, never add anything to that shit. I'm done with soils. Coco only from now on. Its 100x better and 100% easier to control every aspect.