Hi. Can anyone tell me whats going wrong here?? This is my third grow and Ive never seen this before. They are K-Train in week 4 of flowering. I have them in grow tent with oscillating fan, extractor fan & 400W HID. Im feeding Biobizz grow 2ml, bloom 2ml & topmax 1.5ml per litre water and they take about 5 litres between them every 2 days. Temps range from about 14-16c at night to 26-30c during day. The 400w is at about 8 inches from the tops but some of the worse affected buds are as far as 14 inches from the bulb. I dont think its heat to be honest because of how the leaves are yellowing allthough the little hairs do look burnt. I think its nutes but is it too little or too much?? I have not flushed the plants but I have been introducing nutes slowly and carefully as before. I also added about 2 teaspoons of Epson salts to 5 litres of water 4 days ago (no nutes) to prevent lockout. Ive done this on 2 previous grows with no need to flush.