Rare Red/Purple leaves w/pics Please help!

Hello. I have an O.G. kush clone that was started indoors about 2 months ago and then moved outdoors. Transplanted about three times outdoors. the last transplant resulted in poor drainage leading to root rot i think. so decided to transplant it one last time. i had to cut the roots almost in half. its been a week since the new transplant to a topsy turvey. (Asumption) during the drowning, the leaves turned purplish red, almost completely stopped growing, and the hairs started turning brown. now it is growing slowly and adding new white hairs. I am wondering what could be wrong, or if its normal to be red and purple with stunted growth during flower. It is about two months away from harvest. I think I have overdone it on the watering. no nutes before the symptoms and a very small amount of organic nute alittle while ago. can someone help me out. im thinking root rot or possibly a sulpher deficiency. any other ideas. Thx. for your time in advance! O yeah growing in some cheap organic potting soil with chicken manure peat moss guano wormcastings and kelp meal.

its a phosphorus deficiency, i had the same problem. just get some fertilizer, most have that in it..African Violette and tomato ferts will usually have the amount of phos that u need

If your ph is normal its a deficiency if it isnt normal then its probably a lockout. If you have red veins then probably phosphorus cause browning pistils is a sign of p too and u got that sooooooo good luck man... Test your levels

ok will try out the phos. hope i can get this bad boy blooming again. thx so much for the quick response yall. ill keep this plant updated taking pics every few days.