Nutrients 5.8 to 6.2 in soil?

[Sctanley007]

Setup is a 2x4 with MH TSL2000. Growing in HF soil with 4 & 5 gallon pots.

Began growing autos on November 1 and have been using Jack’s Tap line. I’ve been getting guidance from their customer service lead to get their regimen down. So far the plants are growing great and the buds all look outstanding. However I’ve got leaves going yellow and showing signs of deficiencies.

The two on the right are at 66 days. Rear right Seemango, right front is critical xl. Back center and left are gnomo’s which sprouted November 5. The two in front are 21 days today.

Previously I just used Jack’s classic 20-20-20 with silica and CM+ and never saw anything but perfect leaves. I’m seeing yellowing and rust as well as a few spots.

Im watering until runoff but not as much as I use to with photos. I was thinking perhaps a lockout. But doesn’t make sense with several plants.

The rep is adamant that the solution be ph’d to 5.8 to 6.2even though I’m in dirt. I’ve always read those numbers are for hydro not soil. I’m thinking the plants aren’t getting everything they need at that percentage. I’m thinking about bumping up the ph to 6.5 as I’ve done for years and see if the situation fixes itself.

Any thoughts?

ps- I do realize the Seemango is at the recommended harvest so she’s looking nicely beaten up.

 

[Flux]

6.5 for me.

 

[Sctanley007]

Are you using Tap?

I really can’t figure the logic behind the lower ph in soil.

 

[GeorgeCloney]

You could be over feeding, causing a calmag def'c.
What is you feed ppm?
Have you considered doing a soil run off test for ppm &ph?