Hey I have one chronic plant 5 weeks two days old . she's in biobizz all mix soil not getting any feed at the moment only what's in the soil.i recently potted her up in to final pot before switching flower, she's under 600w hps light with a 5 inch ruck extractor fan and a oscillating fan. ph is fine humidity 60 percent.the problem is yellow tips on new growth which is spreading inwards also there is yellow tips on older leaves all at the top to middle of the plant also there seems to be a fading on larger leaves working it's way inward here are some pictures excuse the Thomas tank bedroom it was best room for light for a picture lol