Flower week 6 problem

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sacro

Active Member
So I have 4 ladies in their 6th week of flowering.

They are grown in a good soil with terrible amounts of clay balls (40%). I know this was a mistake, but I'm too far in to change anything about it.

I am feeding with BioBizz starter kit (Flower food, bio heaven and top max) and adding cal-mag at 1ml/L. I water them with PHed water about 2-3 times a week when soil is dry.

They grow under a 250W HPS, 12/12 cycle where the lamp is about 50-60cm above the tops.

The cabinet is vented with PC fans. No trouble before so I'm guessing its alright.

Also on saturday I flushed the soil, then fed half dose of normal about an hour after.

What can this problem of mine be? I do realize it looks like nuteburn, but why the bright colored leaves?




 

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FLkeys1

FLkeys1

Well-Known Member
Can't say it looks good but I tend to see more of a Iron deficiency. Clay soil tends to be on the acid side of the PH scale and a low PH will normally allow the Iron to be taken up by the plant but a acid soil if too acid will tie up the nitrogen. Have you ever checked the Ph of your soil?
 
Sativied

Sativied

Well-Known Member
sacro said:
I do realize it looks like nuteburn, but why the bright colored leaves?
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'Nuteburn' is a symptom just as bright colored leaves and can have the same cause, using too many nutes. Too high nutrient level can cause deficiencies as a result of root problems of nutrient antagonism (too much of one element can prevent proper uptake of other elements). It can also fuck up the pH level which in turn can also prevents proper uptake of certain elements. That's why it's hard to diagnose, a deficiency in the plant does not automatically mean a deficiency of nutrients in the medium, on the contrary, it can very well be caused by a too high nutrient level.
 
S

sacro

Active Member
Soil PH is 6,5 with a digital meter for soil. Other than that I never added iron, but did add calmag and nutes.

Also I flushed these ladies on saturday, then added a little food when done (very low dose). Also far as I know, adding N now is a waste.

Shoulda mixed in some bone meal when i mixed the earth :/

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S

sacro

Active Member
I guess for now Ill water with epsom salt. 4tsp/gallon?

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S

sacro

Active Member
Meant 1tsp, no idea why i wrote 4. Sry for spam, cant edit posts on mobile app it seems

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S

sacro

Active Member
Update:

Watered with cal-mag, epsom salt and a little potassium. I realize theres not much I can do so I'll simply try to make them deliver what I'm after with some emergency stuffs :)
 
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