Help leaves changing colour yellow with brown streaks

[Monstermav1]

Hey guys,
First time grower here I've run into a problem these last couple of day.

I noticed my lower leaves started to look unwell, nothing to worrying till I got home today, please advise on what these could be thanks in advance.

Problem: (brief description)
-Medium/grow method: soil it's a local brand I'm in Cyprus
-Feed and supplements used: biobizz topmax bio bloom and bio grow
-Water source: bottled water
-Strain and age white widow auto fastbuds
25 days old from planting
-Climate: 26/55%
- Light used: mars 600 20/4
-Additional info: How long have the plants been affected?...4-5 days How fast did symptoms appear?... worsened last 12hrs

 

[Green Hornet]

Hello @Monstermav1 There is a patient form at the bottom of the colored portion in the infirmary for sick plants. Please the more info the better

 

[blue]

https://www.autoflower.org/threads/...ill-out-first-with-the-data-that-matta.45991/

this one ^_^

 

[Monstermav1]

Updated I hope this is enough information the feeding schedule bi have been following is from biobizz
Bio-Grow 2ml/l
Bio-Bloom 2ml/l
Top-Max 1ml/l

 

[Green Hornet]

Hold on I don't know my s from shineola with biobiz but many here us it. I can't advise

 

[Green Hornet]

Many times if a plants watering schedule allows the pot to go dry this condition has happened in my grows. Smaller amounts of water more often will help. Lift the pot and feel for the weight of the water. Also when the bottom leaves lay on the grow medium I have seen the bottom leaves discolor.

All the auto plants that I have grown eat very little less is better in my grows. I would advise a water only diet for sure to see her reaction for a short period. And on the water, distilled, RO or rain water is all I trust unless it has been PHed and the PPM's checked.
Hope this tid bit helps and Happy farming

 

[Mañ'O'Green]

@Monstermav1 Welcome to AFN It looks like you may be overfeeding them? Please give this a read:

Tutorial - A word on Nutrients

The proper use of “salt” based fertilizer to grow Auto Flowering Cannabis. Salts: Natural and man made any chemical compound formed from the reaction of an acid with a base, with all or part of the hydrogen of the acid replaced by a metal or other cation. Learning how to use salt based...

www.autoflower.org

Then use this chart "All Mix" at about 50% strength. Feed, water only, water only, water only, repeat.

Keep us posted.

 

[Monstermav1]

Good afternoon all,



Thanks for all the replies I narrowed down the issues shortly after posting however it wasn't an easy diagnosis.



I was lead to believe the pH was high so I lowered the pH levels and re tested till in spec.

Shortly after I noticed no improvement so I ordered a new pH meter it turns out the pH was the issue however I needed to raise it the reading I got I was mortified it read 2.8



I made a fresh batch of nutes watered till I saw run off then waited to see a difference... I am pleased to say after a few canopy's needing to be removed we are full of life again and developing.



I believe the canopies that show the signs of the sickness will never change however I'm a beginner and only pulling at straws.



From my understanding the pH issues has stunted the growth however this could be me just thinking negatively.



I'm happy I managed to sort this before it was too late let me know your thoughts all ears open.