Help with deficiency identification

[Cannaficionado]

Yeah, they are in bad shape lol. My issue is soil pH. It was super low it's slowly getting higher, and they are getting better'ish. I have no idea how my the pH is so low. Giving them 6.7-7.2 so not sure how runoff was like 4.5. It's now around 5. I'll keep putting pH+ until they get to a good pH, die, or finish. I don't think they will die they're actually got kinda big so gonna to ride them out. I got to the 4th of July, or so gonna be a while.

Excessive sulpher possibly? Sulphur is what most company's use to acidify soil, or phosphorus

Edit

@McDee I know tps nutrients makes a line of calcium that does not have magnesium, it has trace amounts of boron and other micro-nutrients, but that calcium will help add some base pH to the medium, I would just take it slow and maybe add just a pinch of magnesium sulphite to help offset the rise in calcium. But I've never done anything like that before.

 

[McDee]

Excessive sulpher possibly? Sulphur is what most company's use to acidify soil, or phosphorus

I don't know I'm terrible at seeing or deciding wether it's this or that. Here is what I can tell you. This is reused peat. 1-3 grows in it ca6n't remember, I do use cannabis so that happens sometimes lol. It had either Craft blend, or Natures Living Soil... maybe both. I sterilized it after last grow. Put it in boiling water, then flushed water through it. I didn't have pH issues prior. I did use lobster compost on top for the 1st time. Only thing I did differently.

 

[Cannaficionado]

I don't know I'm terrible at seeing or deciding wether it's this or that. Here is what I can tell you. This is reused peat. 1-3 grows in it ca6n't remember, I do use cannabis so that happens sometimes lol. It had either Craft blend, or Natures Living Soil... maybe both. I sterilized it after last grow. Put it in boiling water, then flushed water through it. I didn't have pH issues prior. I did use lobster compost on top for the 1st time. Only thing I did differently.

That might be it then. Ive never reused soil. That's weird store bought lobster compost is usually 6.5 for a ph. Weird, hope it turns around for you.

 

[McDee]

That might be it then. Ive never reused soil. That's weird store bought lobster compost is usually 6.5 for a ph. Weird, hope it turns around for you.

Thanks bud! I think I may just use new stuff next grow.

 

[BII]

.... Put it in boiling water, then flushed water through it. I didn't have pH issues prior.

Boiling water seems like it might have leached out/dissolved a lot of the minerals/nutrients in the soil, such as say dissolve the calcium salts? And/or maybe complex organics, such as fulvic and humic acids, were degraded by the heat?
[I grow in coco, but with soil I'd avoid sterilization. Presuming the main reason for this is to kill all the insects (vs. wanting to kill all the soil microbes), why not just soak it with a harmless pesticide, such as Spinosad?]

Might there be an imbalance or deficiency in your soil microbes? After boiling, how did you rebuild/reinoculate it to be living soil?