I’ve been up and down the forums, and I think I have a magnesium deficiency. Yellowing between the veins. I read that rosin salt can help. Even that foliar feeding this is effective
. 2nd week of flower from what I can tell. I feed cal mag every watering. Since they are stretching watering has increased to every other day. Fully switched over to maxibloom per package instructions. Ocean farms is the medium. Dechlorinated tap water ph to 5.8-6.2. First hiccup In an otherwise smooth grow. First time with autoflowers and indoors. Any help would be appreciated.
There are some charts out there I don’t have it sorry. But it shows that PH of 6.5 in soil is where the plant can take in all the nutrients it needs. If you go too far above or too far below that 6.5, it will not allow the plant to take up certain nutrients. Then will show a deficiency.
I’m not sure the science behind it exactly. Coco/hydro pH 5.8-6.2, soil 6.2-6.8. Organic/living soil pH doesn’t need to be specific, but usually between 6-7.5. I know that much, but not reasons for the pH differences.
pH is the ability of your soil to allow the uptake of most nutrients. The lower the pH, the more hydrogen in the soil or more acidic. It also has an effect on microorganisms and their ability to do what they do. Usually if I start having issues, pH is first check. Recalibrate meters and check runoff.
I knew that i was just wondering why it’d be different for soil and it’s because the soil buffers it so you put in 6.5 but it buffers down to like 6.2 or so. I didn’t know but i googled it
That’s what I’ve seen and i do rdwc. I like to keep mine Anywhere from 5.8 to 6.2 but anything from 5.5 to 6.5 is okay and the reason soil is higher is cause it buffers it so you put in a little high and it’ll and up right
I never bothered with pH during virtually all of my soil grows, and when I did start checking recently, it was always okay. During half a dozen years of growing indoors in dirt, I ignored pH and never had a plant go tits-up. I did a lot of things the “wrong” way in those grows and got a decent amount of potent dope as a result.
Now that I’m growing DWC, I know I have to check and pH down my water from 7.4 to 5.8. With Jack’s 321, it gradually crawls up to 6.5 after two weeks, and I dump and resupply.
Same lol i did maybe like 5 grows in soil then switched to rdwc and never looked back lol. I never checked any numbers in my soil grows but they grew fine so whatever. i prefer RDWC though cause of how easy it is. Like say i wanna know how much water they have or check my ph or ppm i can just look and it only takes a minute
Welcome aboard. Some pictures in white light will allow a better look at leaf discoloration and help a prognosis. The blurple distorts what we are trying to see. If thinking mag just add a tblsp epsom top dressed in and see. Wont hurt it. Can only help. Take a week to see new growth green. Damaged leaves wont fully recover typically. Just my thoughts.
