Endangered plant

Hello people
I'm new pah. Sorry English is not clear
I have a problem and I have no one to turn
I need help
my plant sick
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himalayan gold
7 week fluwering
bio-grow 3 ml
bio-bloom 3 ml
top-max 2 ml
alg-a-mic 3 ml
BioHeaven 3ml

400 wat hps
24 - 26 temp.
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somebody help my please
tnx
https://www.rollitup.org/view.php?pg=faq&cmd=article&id=35

looks like it could be a brown mold issue take a bud and separate it look inside the bud to see if it is brown or moldy otherwise keep an eye on your ph