Third Time Grow, Slight Yellowing/Browning of leaves

Hey all,

My friend Elvis sent me some pics of his 3rd grow.

Its looking pretty good, but he is concerned with some yellowing of the leaves.

Let me tell you a bit about his story:

He got a cutting from a friend for his birthday, already planted and starting to root.
As he didnt have a lighting system at the time, he wired himself up a two 11W energy saving light bulbs and had them on 24/7. Although they were Red Spectrum lights, he had neither the time nor money to seek out anything else.

This continued for about 3 weeks untill he had enough cash to buy himself a 125W Blue Spectrum Compact Florescent.

He also bought himself a big bag of Nutrient laced All-purpose Compost and re-potted his girl and has been happily continuing his third time grow for another 3 or 4 weeks.

The problem started only a few days ago,

He noticed some yellow patches forming on the tips of the leaves. Which has continued to developed more and more and on other leaves too.

From countless searching, he has come to the conclusion that its some form of Nutrient Deficiency. But this confused him, as the compost states that it has enough Nutrients to last for 7-8 weeks.

Sooooo, i thought i would ask around on here as ive read many grow journals, info, questions.

He is still quite strapped for cash, and cannot buy high priced nute boosters.

Is there anything he can do that wont cost him a packet?

Ive added a few pics of his girl, so you can have a look for yourselves.



Any info would be greatly received,

Thanks guys

Sorry to bump...

But this was 3 days ago now, she's apparently gotten worse....

Any help?

Discoloration in the leaves, yellowing or rusty spots and leaf tips curling upwards are all classic nute-lock symptoms. Nutrient lockout basically occurs when optimal nutrient levels are not pH and nutritionally balanced so your plants cannot get access to a specific nutrient or group of nutrients it needs, consequently it develops a deficiency. Cannabis grows best in soil with a pH from 6.5 to 7.0. Within this range marijuana can properly absorb and process available nutrients most efficiently. If the pH is too low (acidic), acid salts chemically bind nutrients, and the roots are unable to absorb them. An alkaline soil with a high pH also causes nutrients to become unavailable. Toxic salt buildup that limits water intake by roots also becomes a problem. The pH of organic soil mixes is very important because it dictates the ability of specific pH-sensitive bacteria. To remedy, flush with 3x water to soil and get a pH meter for your nute solution and test your soil with a soil meter or litmus paper.

Elvis, eh?lol


Anyway,....I would tell Mr Elvis, to get the plant outta that pot, knock off the soil that fall off easily, then re-plant it with a different soil. While he's at it, he might as well go to a slightly bigger pot, because he's going to have to eventually, anyway. That soil look to have tons of wood-chips in it, which don't work too well for growing MJ. Look for something that has perlite in it, yes.....even Miracle Grow soils. I use it with excellent results, and trust me, it's waaaaaay better than that woody stuff it's in now. Give it a week or so, in good soil, and it'll look much better.

My plants were doing the same thing and it was from over-watering them. Let them dry out all the way...almost to the point that the soil is peeling from the sides of the pot...and then give it a good watering.

Also as mentioned above...get that in some good soil with lots of perlite and sand for drainage.

Weedo Bandito said:

Discoloration in the leaves, yellowing or rusty spots and leaf tips curling upwards are all classic nute-lock symptoms. Nutrient lockout basically occurs when optimal nutrient levels are not pH and nutritionally balanced so your plants cannot get access to a specific nutrient or group of nutrients it needs, consequently it develops a deficiency. Cannabis grows best in soil with a pH from 6.5 to 7.0. Within this range marijuana can properly absorb and process available nutrients most efficiently. If the pH is too low (acidic), acid salts chemically bind nutrients, and the roots are unable to absorb them. An alkaline soil with a high pH also causes nutrients to become unavailable. Toxic salt buildup that limits water intake by roots also becomes a problem. The pH of organic soil mixes is very important because it dictates the ability of specific pH-sensitive bacteria. To remedy, flush with 3x water to soil and get a pH meter for your nute solution and test your soil with a soil meter or litmus paper.

Click to expand...

Nice. You know your shit. Rep.

Thanks for the replies guys,

I will pass the information onto my friend. He will be most pleased.

You might hear from me again, depending on whether Elvis has anymore problems

Thnks again

DUDE that plant was reveged from flower (it will look all kinds of retatrted for around a nutha month)
Also looks to hi on nutes (see how shiny it looks)!!