What are these brown spots??

I am growing lemon AK autos in Fox Farm ocean forest. Using the Fox farms trio at half strength every 2 waterings. (w/w/f)I am in week 8. Water in at 6.8 or so. Run of at 6.3-6.5. 600w mars hydro led in 3×3×6. The gro has been pretty good up until now a few very minor setbacks but today when I went to check the tent I noticed these Brown spots forming on my leaves. Any idea what they are from? I am guessing Cal mag but I do not want to give her more than she needs. First timer any help is appreciated.

How often do u use calmag?

Maybe 1ml per gal every 3-4 waterings

I use 2 ml per liter so u have to use a bit more of it....try it out and see the resoults

I gave 2ml today along with normal feeding. And i pruned some of the spotted leaves.

Should i use it every watering?

U will see the resoults in a few days and see if that was the problem....Happy growing

No dont use it every watering because the plants doesent neee that much of it

Someone get Bob lol it's aliens again!


Need some calmag

use 5ml/gal of calmag every other watering. I use calmag only in between feedings (Using plain water)

HydroKid239 said:

use 5ml/gal of calmag every other watering. I use calmag only in between feedings (Using plain water)

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I use it once every 7 days and it works out perfect

HydroKid239 said:

use 5ml/gal of calmag every other watering. I use calmag only in between feedings (Using plain water)

Click to expand...

Thank you. I was tryin to air on the sode of caution because i read autos dont like alot of nutes. Too cautious i guess. Thanks and ill give it a go. Think i got time before harvest? Im at wee 8 outta 11

Looks like a bit more than 3 weeks to me

VandalGrowerOg said:

Looks like a bit more than 3 weeks to me

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Not sure where you got 3 weeks from. They are 8 week old plants.