Need advice

[susieqtpie83]

I was planning to go to flower but this has been postponed due to some issues with yellowing leaves. Ph is always tested at time of water and nutes are given at smaller dose. So I'm at a loss , I dis have white powdery mildew and treated with Growsafe biopesticide and this is the only thing that is out of the ordinary. Any ideas as to what is causing this problem? It is occurring on all plants but sporadic on the location. Thank you in advance

 

[alltatup]

You might have nute lockout, but you don't provide enough information to be sure:https://www.growweedeasy.com/flushing-sick-cannabis

 

[susieqtpie83]

What other details are needed? Sorry

 

[alltatup]

susieqtpie83 These are the guidelines of the info you should supply so that we can help: https://forum.growweedeasy.com/forum/growing-community/39087-sticky-question-posting-guidelines

 

[susieqtpie83]

Soil grow medium
fox farm grow big nutes
2 indoor grow tents
t5 light in one tent with 3 plants
2 600w vivaspectra led lights in 2nd tent with 2 plants
7 gallon fabric pots
last water was yesterday with calmag solution
temp avg 70
humidity is on point

 

[DingusKhan]

Thanks, that does help a lot. It might also help in this case to post a REALLY close up of a leaf to check for bugs.

Like with a clip on macro lens or USB microscope.

 

[homegrown]

Hey susieqtpie83, have you noticed any tiny bugs buzzing around your plants? I think Fungus Gnats,... er their larvae, can cause some of those leaf issues.... check out plant problems section on the GWE website... just an idea.

 

[Mr.furley]

Looks like ph problem or
https://www.growweedeasy.com/cannabis-plant-problems/phosphorus-deficiency

 

[susieqtpie83]

Thank you everyone. I ended up performing a flush and will wait and see what happens..

 

[Cali]

Did this start before or after the treatment? Also did you spray your leaves at lights out or with lights on? Sometimes when you spray you can burn the leaves, that happened to me when I sprayed and the lights stayed on. Or what you used was very concentrated.

 

[Sledrock]

How far is your light from the top of plants? Do you have plenty of ventilation? Mr Furley may be right (He's a "Grow Wizard")

 

[BaccaRacca]

I have some suspects. What soil are you using? What amounts of nutes are you using?

 

[alltatup]

susie, it's a very important practice. The plants really love the breather and bounce back with a lotta flex! ;-}

 

[susieqtpie83]

It appears the culprit was the treatment. Hopefully the flush works and I just treated leaves with ph water to get any residue off the plants.

 

[susieqtpie83]

Yes plenty of ventilation and the lights are set properly for the plant height.

 

[susieqtpie83]

Promix soil
Fox farm grow big at 1 tsp per gallon

 

[Mr.furley]

Promix for the most part is not soil and most version of it don't have much for nutrients, your plants are starving and need more then just grow big.
you most likely need to add tiger bloom, big bloom And a calcium magnesium supplement to your grow if you use promix and foxfarm.
this is why I'm pointing you in the direction of phosphorus.

Once the plant is showing a phosphorus deficiency it has been needing it for upwards of five weeks, yellowing, crispy, upward turning fan leaf are a tell tell sign of a phosphorus deficiency and at this point in the deficiency stage it will also lock out cal/mag.

Your plants will not recover but if you get it to them asap your buds size, density and overall development won't suffer as bad then doing nothing but You most likely will not have a pretty plant and the discoloration and crispy leafs will never fully go away.

susieqtpie83 can you provide pictures of the whole plant in nature light to help nail this down.