Copper tip burn

Have newer growth showing a burn of copper color. Think nute burn plus ph off due to being out of town for couple days.
RDWC, 30 gallons, 1 plant.
EC 1678
PH jumped to 6.3, down to 5.9
Temps 84f day, 74f night.
Humidity, varies but high up to 67% at times. Getting dehuey for tent, Lung room not cutting it With 8" extraction fan in 5x5 tent.
400w LED true wattage from wall.
Jacks 321 at 5/8 strength.
Running sterile pool shock, .9 grams per 30 gallons.

Thoughts?

You need to run the epsom salts at 1 gram per gallon to not have deficiencies with jacks. I quit running their product I don't like how I gotta add so much extra bs I just use 1tsp/gal maxibloom now and pH to 5.8. Your environment and everything sounds good I think it's your feed.

calvin.m16 said:

You need to run the epsom salts at 1 gram per gallon to not have deficiencies with jacks. I quit running their product I don't like how I gotta add so much extra bs I just use 1tsp/gal maxibloom now and pH to 5.8. Your environment and everything sounds good I think it's your feed.

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Thanks for the response @calvin.m16 Apreciate it.

I have removed some lower growth, especially the stuff that looks bad. Lowered the EC a bit and been keeping a closer eye on things. May have gotten too lackadaisical with things for a while there.

I don't doubt my mix could be the issue, but think there is a way to make it work from other grows I've seen. Gonna try some things and keep close records. Just expirament and bounce things off the good people on RIU. Hell, I ain't got anything else to do.

I will say my first couple grows were following maxibloom and the KISS method/thread from a decade ago in a bubble bucket. Worked great, but I can't help but tinker with things.