Sick and tired same problem

[Machamillion]

My purple lemonade is doing the same thing on the lower fans. I am using mantis all in one nute too.i am going to give some cal/mag. it is minor at this time.

 

[LazyNhazy]

How did you check the soil ph? Where in the pot was the soil checked? Deep middle? Deep side? Shallow middle? I ask because the soil ph is controlled in the rhizosphere. The rhizosphere in the soil will correct the ph to its needed levels. Other parts of the soil can and usually will have a different reading. Plus, if using a soil.. It's super hard to get the soil ph down in the 5's.. You have to really TRY to do that. Most soils are buffered. So just wondering the method you used to check the ph!

If I'm not mistaken this guy is growing in peat which is super hard to keep above 6

 

[Proph]

If I'm not mistaken this guy is growing in peat which is super hard to keep above 6

He said he is using good ole Sunshine #4.. Which is hugely popular all over the USA.. From major farms to closet grows.. It's soiless and should be treated like hydro. It's ph is usually stable at around 5.9-6.2 out of the bag. Kinda like coco, just amended. It also has dolomite lime to buffer the ph and help keep it in range. So when he says his ph was in the 5's.. There's a huge difference between 5.2 and say 5.8. That's why I was wondering how he checked the ph..

 

[Waira]

so I did a ph test of the soil it tested at 5.5 so my other pen was messing me up but im pretyy new still thanks boyz for the help

how exactly did you do this? Run-off testing is notoriously inaccurate, but it can give ballpark results if done right.. There's a Improved method in the Sticky article section above this one,...

I do my soil test by saturating medium until slight run off, also always water slowly and in increments. Never dump water until run off best to wet it wait 2 mins then repeat until run off.

Walk away for at the least 15 minutes then come back and slowly water a little more and catch mid run off, I prefer 30 but have done both with fairly accurate results.

This is one of those things where some believe it's okay and some don't. I myself have always used this method with better results than a soil probe.

Here's the problem with any run-off testing: it's like using a pour over cone coffee filter to make coffee... you're soaking and then draining the solution off, but it's concentrating more and more as it does so, skewing pH results in kind; it can make for a significant source of error in accuracy,... Also, if you used anything but RO/Di or very low ppm water, the mineral CaCO3 in it will act as a buffer, skewing results more.... If your soil is already OK in pH, run-off results will show that more or less,.. if it's borderline, and/or done wrong, that's when you're gambling with this method,.. if it's way off, you know at least that it's needing correction, even if you don't know the exact pH...
Just for confirmation, I've done slurry testing vs. the Accurate 8 soil pH probe, with different soils... All results were within 0.2pH of each other respectively, which is the best resolution the A8 can give... I find after years of use, it does the job plenty well, and never found the need to get a more "pro" model like the Blue Labs unit, which is in fact basically a pH meter, it has an electrode bulb type set-up just like meters (liquid only) do,... And all the same need for fussy care and cleaning that a pH meter needs if you want it to work well and last....
Proph is right, the soil pH varies place to place, which is why nothing is better than a direct measurement in-pot, with a quality pH probe made for this... Slurry testing is also good, but for a plant already growing, mining out the soil and thrashing the roots is unwise, to say nothing of being a PITA!
I test with the A8 at two levels just to be sure,...