Leaves turning yellow why?

Bruce banner ILGM, 75 days since pop, wk 5 flower. FFOF soil , 5 gal pots, indoor, 3x4 tent, hlg 240 light.
FF nutes given every other watering. cal mag occasionally.

Have had good grows using same methods equips. ect. But this time plants are taller than I’ve had in the past 3ft. I’m sure I’m fn up the nutes. I ph to about 6.5 going in after the nutes are mixed. Water to run off. I have a TDS meter but tbh I don’t get the ppm thing. I thought it might be nitrogen deficiency but I don’t think I’m doing something right. Thoughts?

Not an expert but I see tacoing on the top, which usually means high heat or too much light. Since you said you have grown with all the same conditions before, then the only variable is the plant itself. Seems like it got taller, so it’s closer to the light, receiving more energy, growing more, so maybe it needs more nutrients. If I were you I would supercrop those tops.

As far as what nutrient it’s deficient in, I don’t really have the experience to say on this one.

@Hellraiser @Myfriendis410 @MrPeat @MidwestGuy Any help on this one?

Some yellowing once you get several weeks into flowering can be normal. It would be really helpful if you could cite runoff pH and PPM numbers.

The bottom leaves look well fed. I’m not too familiar with issues where yellowing starts from the top. Maybe the others can help here.


Since they are in flower what specific nutrients are you giving?

Their needs do change a bit. Some nutrients you will stop or decrease and others start or increase.


My question as well.


Come on, guys: this should be first thing.

COPY/PASTE the below list into your forum post.

Answer these simple questions the best you can.
If you do not know, or do not use something; Just say so; Or post
NA (non applicable)

-What strain, Seed bank, or bag seed (photo or auto)
-Age of plant
-Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KNF
-Vessels: Type and capacity of container (fabric, plastic, etc)
-PH and TDS of Water, Solution, runoff (if Applicable)
-PPM/TDS or EC of nutrient solution if applicable
-Method used to measure PH and TDS
-Indoor or Outdoor if indoor, size of grow space
-Light system List brand and wattage/spectrum
-Actual wattage draw of lights
-Current Light Schedule
-Temps; Day, Night
-Humidity; Day, Night
-Ventilation system; Yes, No, Size
-AC, Humidifier, De-humidifier,
-Co2; Yes, No

If growing Hydro some additional questions:

-DWC? RDWC? Autopots? Ebb and Flow? Other?
-Distance of liquid below net pot (DWC)
-Temperature of reservoir
-TDS of nutrient solution
-Amount of air to solution

Always try to upload a clear picture in white light of any issues you may have to allow the community to assist you.


Thanks @Myfriendis410

I finally had to cut and paste it into a word document! But I can only add it when on my PC (I have an ancient Iphone).

Best to you!