New to growing need help

[Novicegrow819]

Hello all im new to 420magazine. I'm on my 2nd grow in a ebb and flow bucket system I bought from my local grow shop. It has a 55g res a controller bucket and 4 3g grow buckets. There is 2 air stones in res and 1 in each grow bucket. I'm growing somango xl running heavy nute line at half strength with clear rez and slf100 at full strength. Grow environment:
Temp 80-90f
Rh 45%
Co2 1000ppm
Water conditions:
Temp 68f
Ph 6.4
Ppm reading at .5 unit 810
I noticed a smell coming from my res and the tips of roots browning with very little build up. Drained and cleaned system with h202 and refilled. Im now noticing dark green leaves almost leathery so to speak and brown spots popping up on fan leaves. Getting worse by the day, still getting new growth any help or advice would be greatly appreciated

 

[Novicegrow819]

Here are some pics plants are about 35 days old

 

[plugger]

Doing my first hydro grow but sounds like you have root rot. I would advise getting some Hydroguard and adding that to your res all during the grow. Your res should not smell bad, and browning of the roots is a symptom of root rot from what I have read here.
I would also keep your PH around 5.8 for a hydro grow.

Like I said I am doing my first hydro so see what others say also

 

[Novicegrow819]

Could it be the root rot causing these issues to the leaves? I'm getting new root and foliage growth

 

[Rafa7]

Your Ph shouldnt go above 6.4!

In hydro, Start your ph @ about 5.6.
As the plant feeds it will raise the ph.
When the ph gets to 6.2 lower it back down.

You're creating nut deficiencies not because the nuts arn't in the solution, but because the cant uptake them from the water due to the ph.

 

[Novicegrow819]

I'm about to lower ph right now we will see if they get better

 

[Rafa7]

Also your room temp is to warm. try getting it between 74 and 84. Your near 50%RH and that temp the plant will have a hard time cooling themselves.