CUSTOM GROW BOX First Time DWC NEEDS HELP LOTS OF PICS "8 Strains.

I started growing a week ago and am having problems with some of my plants. I cut off the dead leaves but they were yellow and dried up and turned brownish. I also spoted a little red bug today but i didn't manage to kill him. What should i do??? I use foxfarm grow big and tiger bloom at a 1/4 dosage with ph at 5.8 and it is up to 6.2 now. My temp is a little high at 80 + 70% of the time and 70+ the other 30%. I also used hygrozyme in the mix. I am growing OG, Super OG, Blackberry Kush, Sour Desiel, Banna OG, LSD Kush, and thats it.

there quite bad.. neut burn?? root rot? overwatering?

Flush your plants .I would stop with the nutes for now until you've figured out the problem.

yeh looks like overwatering, chill wiv the water schedule.
prob take u time to dial in anyway if this ur first time dwc.