Red/copper on lower leaves really irking me. Please help.

Only this plant doing this it seems. Purple sunset. Don’t know what the problem is. I’ve fed cal/mag twice and not seeing any improvements in this leaf only slow worsening symptoms. Using soil ph to like 5.5-6.0. Lot of perlite so going for slightly more hydro range. Quantum boards for lights if that matters...

If it were me, I'd change my pH to mirror a soil grow....the 5.5 is most likely not helping you. Once I had a handle on my pH, then I'd worry about what issues I may or may not have, but not the other way around. Good luck.

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I agree with CannaCountry, up your Ph to 6.5 - it's where Mag is absorbed the best.

Looks like mag def.

The damage in the leaves will never repair, you just want to stop the spread.
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Hobbes said:

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I agree with CannaCountry, up your Ph to 6.5 - it's where Mag is absorbed the best.

Looks like mag def.

The damage in the leaves will never repair, you just want to stop the spread.
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Thanks folks. I’ll indeed start Ph higher. I think I have a crappy soil meter thing and I use pen etc for water but sometimes I stick this probe thing in my soil and it never goes under 7 on the meter so I think I always ph down and I’m starting to wonder if that meter is getting accurate soil PH or if I’m shooting it down too low.

Moabfighter said:

Thanks folks. I’ll indeed start Ph higher. I think I have a crappy soil meter thing and I use pen etc for water but sometimes I stick this probe thing in my soil and it never goes under 7 on the meter so I think I always ph down and I’m starting to wonder if that meter is getting accurate soil PH or if I’m shooting it down too low.

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If it's one of those moisture light pH combo meters I think you are using it incorrectly. If I'm not mistaken you have to mix a small sample of soil with water till it becomes mud then test it.

Dannydavito said:

If it's one of those moisture light pH combo meters I think you are using it incorrectly. If I'm not mistaken you have to mix a small sample of soil with water till it becomes mud then test it.

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I may be using it wrong. I just shove the probes down into the dirt. Need to do a slurry test and see what soil ph is. I think I use distilled water for it which I have. Hmm.

Hobbes said:

The damage in the leaves will never repair, you just want to stop the spread.

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I recommend not plucking the dying leaves until after the problem has been resolved. Although the damage won't repair as stated, the leaves will indicate if the problem is resolved (issues on the leaves don't spread, and other unaffected leaves stay healthy) or is getting worse (unaffected leaves becoming affected, dying leaves getting worse).