Yellow leaves ,brown spots and tips curling up.

Hey Growmie, If the issue has gotten worse since you gave them nutrients, then this is going to be from salt buildup, which means your plant is going to need a light flush to get rid of the buildup and then feed the plants afterward, things should look different in about week, but remember the leaves that have damaged will not recover so don't judge if the plant is getting better by that.

Awesome , I think I may try that...... I'm going to run 3 gallons of ph'd water through both...... let the spil then dry out and needing a watering and start back with half dose of tiger bloom and bush doctor to see if it remedies the situation

Hey Growmie, I’ve had autos look similar, in my case it was a nutrient burn/buildup, the lower leaves started to yellow and die, dark leaves appeared, the tops and tips of the leaves near the top of the plant were curling and browning… try flushing the plant with a few gallons of phd water, and then in the next feed after you have had dry back, introduce a low dose of nutrients and see if the plant continues down the same path… Good luck Growmie! 🇨🇦👊

I wayer until runoff every 3-4 days. The two plants....one is thirstier than the other. Tiger bloom and cal mag only once a week. So nutrients have been low dosages and only tje last two weeks

Growing I'm fox farm ocean forest was told not to add nutrients until flowering. Once flowering 1/3 dose of tiger bloom abuse doctor cal/mag..... wayer is spring water ph'd to 6.5

Are you checking pH and ppm of runoff? What soil are you in, what nutes are you using, what's you feeding/water schedule? All these are important info but you don't have a diary for us to look back on. So if bet you have pH, overfeeding and possibly some issues dealing with calcium. Did you give the plant any cal mag during flower?