Help Diagnose Plants

Hi,

Can I please get some help figuring out the issues with my plants? I've read around and cant pinpoint what my exact issue is. It looks like it could be multiple issues. I'm currently growing with a 350 Watt LED lamp, using hydro. This is my second grow, and on my first grow I had a similar issue, and it resulted in my crop being destroyed (I thought my nutes were bad since they were a couple years old). I really need to figure out whats going on.

This started to appear 2 days after I started 12/12 cycle. I did some trimming, and I sprayed my plants with some mite killer the same day I did my transition and changed my reservoir. I planned on doing a 10 day transition period until bloom. My nute schedule for a 55 gallon reservoir is below for the transition.

Hygrowzyme 180ml, Cal/Mag 420 ml, Grow 140 ml, Micro 280 ml, bloom 140 ml, Diamond Nectar 140 ml, Floralicious 28 ml, Florablend 210 ml

My room temp is between 75 - 80 degrees, my ppm is around 1100, and my pH is right around 5.8
A few pictures with my issues are shown below. Please, Please help. added note these all appear to be about half way up the plant.
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Sounds like a pathogen issue. the yellow new growth is usually a root system problem, they are rotting. Use H2O2 in the res every 4 days to keep it free of pathogens. Your res is probably a toxic soup of nasty little critters. When you first add the peroxide it will bubble up like a witch's brew.
Get the concentrated stuff- 50% grade at 1000:1

too high temps, 60-70 are best for me in DWC and your ppms and really high, i dont touch 1k until flowering.

cut your nutes down to 500-800 and get some fresh nutes for fucks sake, a couple years old? Holy salt build up batman.

you didnt say how old the plant is, what week are you in?

Hi

My plants are in week 5. My nute schedule during the whole veg process is right around 1000 ppm, and my plants seemed to flourish during that time. also, I have all new chemicals. That was the reason why my first grow failed, or so I thought. From my understanding that temp is a little high, but not anything the plants cant handle

Also I replace my reservoir weekly, I guess I dont really clean out the bottom of the pots, those could be swarming with critters if that is the issue.

Buds is correct, a flush and clean with peroxide or bleach is the only way to actively kill that bad bacteria, avoid over feeding and defoliating your plants ...is dumb!

""Also I replace my reservoir weekly, I guess I dont really clean out the bottom of the pots, those could be swarming with critters if that is the issue."" ..word

https://www.rollitup.org/Journal/Entry/de-leaf-or-not.28321/

Thanks for the responses, I will take this to heart and apply it to future grows. I went out and purchased some 29% H2O2 and hopefully this helps with the current crop.