Very Sick Girls - Pics

I have a yellowing problem that starts at the bottom and middle leaf tips, then moves to the margins of the leaves(leaves curled under) while veins remain green, eventually turning the leaves a pale -white color
Some leaf stems are purple and one main stem has purple lines going down it, also stunt growth and it looks like mini leaves growing where the old ones fell off and died

First, thought it was Potas def- started using MG Tomato Food-18-18-21-no change

Next, thought it might be lockout Nitro def-Flushed 3x pot size and feed immediately after using same food 18-18-21-still no change

Added 2 tablespoons of Dol LIme to 2 pots to A) make sure soil was right or neutral B) to see if it maybe cal-Mag def -Still same =VERY FRUSTRATED

1 Soil Grow-FFOF + 10% more Perlite

2 Temp-78-80 never below 65 at night

3 Humidity-30-35%

4 Water evry 3-4 days or when soil is drying up

5 Water ph-6.5

6 Add nutes to water then ph to 6.5

7 Runoff-6.5

8 Plenty of holes in sides and bottom of pots

9 No signs of bugs

10 Use 1/4 strength nutes=(1 gallon water-1/4 teaspoon nutes)

11 Feed = water, nutes, water, nutes, etc...

12 Water to pot ratio-3/4 cup Water to 1 gallon pot or when water starts to drip out bottom

Are you using sunlight from outside ?

well the yellowing of lower leaves is usually a sign of N deff

but those burning tips are usually a sign of nute burn
she needs more N, but is getting too much other nutes.
find an N exclussive suplament

i might be wrong but that plant looks heavy sativa from those pics, my sativas are almost always real wierd about nute's

speacially towards the dry end of the watering cycle, seem they take up the same water, but the fert conc. are higher so its kinda like over fert.

and i dont mean to criticise, but your being too impatient.
after you flushed you should have waited a week before resuming feeding, then at less than 1/4 str.
and next time you flush use water at 3 diff ph levels 6.2 6.5 6.8
thatl take care of most your salt buildup. well it gets those few that dont become soluble at 6.5 anyway

you got to remember anything you do to the plant generaly doesnt have visible effects for 4-7 days.

switch you nute plan to every 4th-5th time you water untill its a bit bigger

those new leaves growing where the old ones fell off are not leaves, they are branches.
i myself remove those late bloomer off the stalk and branch bases.
just cuz they never catch up, and divert energy from where i want the buds

plants priority is where main photosynthesis occurs.
lower branches that dont get alot of light are cannibalized for nutrients,
that is the plant pulls out N and other stuff to feed its higher branches

Looks like Potassium deficiency to me.

I'm using a 600 mh light

GrowSpecialist said:

Looks like Potassium deficiency to me.

Click to expand...

I agree, check out K deficiency here:



https://www.rollitup.org/marijuana-plant-problems/216537-self-diagnose-your-plants.html