Help please

If you growing in coco and with canna make sure you use cal mag. It seems you are having deficiencies. Read the aptus bible about nutrients to understand the lack or too much of one nutrient can affect the intake of other macro or micro nutrient

Looks like a deficiency. Most likely from nutrient lockout. Check your medium pH with a soil pH meter or check your runoff water pH to make sure it's in range 5.8 to 6.2 in coco. 6.2 to 6.5 in soil. If not flush medium with 0 ppm phd water then feed as usual. Use a ppm meter to check your nutrient solution to make sure your not giving to much or to little. Your runoff ppm should be no more than 300 more than your intake ppm. Good growing

Magnesium deficiency can cause purple stems and white spots could be powdery mildew or spider mites which can be infected by Wind, Air, Ventilation, Pets Even Humans and temp

Hi—- those sprays can sometimes dehydrate the leaves causing burnt edge abs curl. Also looks like the night time droop- don’t think it’s water. It’s the IPm

Hello fellow grower looks like your giving enough nutes an substrate doesn’t look over water to cause droopiness of the leaves. Only thing I it looks like to me is to much light edges are burnt an curling up while the leaf is trying to curl down away from the light. Hope this helps an is the solution to your issues. happy growing!