Yellowing leafs (image)

Anyone know what’s wrong

Can you provide more info and pictures?

it could be so many things

Using peat based soil and watering with ph perfect bloom, 600 watt hps.
Had 1 plant turn a little yellow During mid flower last grow but this one is turning a week into flower

Anyone?

Too much nutrient. Way too much. Give more info next time, soil type, room temps, the details.

A picture under white light not grow lights would help narrow down the nutrient culprits. The colors will be more true to determine the type of chlorosis. Cant see reds or green hues in current grow lights.
Usual suspects calcium, magnesium, potassium, nitrogen.
In that pic I see primary magnesium deficiency, not likely iron and some nitrogen deficiency.

But might see red petioles so phosphorus. But whats the cause? Under fed. Leaching. Water or soil pH issues.

Definitely a deficiency of some type. Hard to narrow down exactly what it is with the limited amount of information provided. Try to be as specific as you possibly can, and not give a basic run down of what you’ve done to this point. The more information you give the better these guys will be able to point you in the right direction. Don’t forget to mention whether it’s an auto or photo.

polishpollack said:

Too much nutrient. Way too much. Give more info next time, soil type, room temps, the details.

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I agree with this. Pretend like we have no idea about your grow. More info you give more info you will receive.

Everyone should have that chart bookmarked.
Thing is that chart is good only for natural light.
NOT HPS lights and NOT BLURPLE LEDs photos.

Plants were fine when I got em couple weeks age feeding with 4ml advanced nutes bloom to 2 litres of water and soil is peat based

Are u vegging right now? Are they auto or photo?

diablo42 said:

Plants were fine when I got em couple weeks age feeding with 4ml advanced nutes bloom to 2 litres of water and soil is peat based

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Than it’s not enough imo, your plant is suffering from deficiencies.

Dolomite. Peat soils tend to run acidic and unless its a premium soil lacking in cannabis minerals needs.

Hard to tell a whole lot without pics in natural light, but they look nute burned to me.

Very little growing experience, would they turn yellow if there to dry?

Dontjudgeme said:

Are u vegging right now? Are they auto or photo?

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Flowering photos my single auto flower plant is fine.