Nutrient deficiency or worse??!

So this has started to appear



Any idea what it might be?

I was thinking a deficiency, but the spots are dark?

Any info is greatly appreciated!

-farmin

Details, please ...
soil or not? pH (if not soil)? Nutrient type and strength? Temps? Humidity? What lights, how close? Strain and age of plant?

Not knowing these, it could be malnutrition (calcium comes to mind), environment (heat, humidity, marginal light burn), technique (foliar anything), or toxins (ozone, a pesticide, even plasticizers). cn

Look like maybe calmag deficent

sorry cannabineer,

Soil, hps, like ~4/5 week of flowering

last time i checked the pH was on the level, and I'm using the GH go box(heavy feed reg)
temps are in the low 80's during day, dont know about humidity. I don't feed by spray.

It could be a pesticide, I've been spraying (on the soil not the plants) to kill some fungus gnats, which i'm still struggling
with. Any ideas on this would be great too!

ill check the pH again

420farmin said:

sorry cannabineer,

Soil, hps, like ~4/5 week of flowering

last time i checked the pH was on the level, and I'm using the GH go box(heavy feed reg)
temps are in the low 80's during day, dont know about humidity. I don't feed by spray.

It could be a pesticide, I've been spraying (on the soil not the plants) to kill some fungus gnats, which i'm still struggling
with. Any ideas on this would be great too!

ill check the pH again

Click to expand...

Cut a potatoe in half and place cut side down on the soil. The larvea of the gnats will be attracked to it change it after a couple days. The adult gnats can be handle too. Get a Raid Hotshot Hanging Pest Strip. Only put it in your room for a day or two when the fans are off. It's too strong to leave in there full time it emits a chemical that could harm anyone who smokes your product. After a couple days the gnats and everything else that crawls or fies will be dead. then put it in a ziplock bag and save it for another day. Again be careful I only use it during veg. I don't want to hurt myself or the nugs, but these things work well. I used it once three months ago and have not seen so much as a spider.

look at the bright side you only have a few weeks left. to Check the ph just add nutrients to the water then check the water solutions ph . soil6.8 soil-less 6 and use the calmag. huck i would rep ya but im out of ammo for the day.

420farmin said:

sorry cannabineer,

Soil, hps, like ~4/5 week of flowering

last time i checked the pH was on the level, and I'm using the GH go box(heavy feed reg)
temps are in the low 80's during day, dont know about humidity. I don't feed by spray.

It could be a pesticide, I've been spraying (on the soil not the plants) to kill some fungus gnats, which i'm still struggling
with. Any ideas on this would be great too!

ill check the pH again

Click to expand...

If you're using GH Flora on a "drain to waste" schedule, I have found it to be perhaps a wee bit light on magnesium and nitrogen. But that would look a little different imo, so I am officially 'not sure". cn

If you have one of those shitty soil ph meters you need to throw it in the trash. they will read 6.8 all day long no matter what. I have one and i could feed with a ph of 4 and it still reads 6.5 in soil.

get this

do you use calmag at all botanicare calmag plus is the best imo

Hey guys, n gals? thanks so much for all the advice. To answer some questions,

HUCK: trying the potato thing now, thanks for the advice ill let you know how it works

CANNA/ISMOKE: im using the "GO BOX" and that does not include the flora series, but I do supplement the cal/mag+ from GH but I'm going to double the dose and see how it goes.

And i have the GH water water pH tester, but my soil tester might be crap??

I have the "three way meter" that I got from home depot, so its completely possible that it could be giving a horrible reading.

I'm rep+'n all ya'll!

-farmin