A little help please?

I have another problem I could really use some help with. In the last couple days the fan leaves on my blue cheese plants have started turning brown and crispy around the edges. I am using happy frog soil, 400 watt hps, sugar peak flowering juice, 87 degrees 35 humidity, week 6 of flower. Any opinions and advice is much appreciated.

It is a potassium def..... There are several solutions for this. Here is a link you can save for future use it will help you to identify problems

https://www.icmag.com/ic/showthread.php?t=11688

Hope this helps.......Good Luck

Hey thanks alot! The link is very helpful.