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yellow leaves

G

gx31

New member
hi there i am a new member in need of help. Badly. i am currently working on my second attempt. the first attempt stayed small and stopped growing.i had to shut it down ! i changed my soil to 4 parts promix premium with 2 parts perlite and 1 part worm castings. i am running 2 viparspectra600s. circ fan and exhaust fans. GreenPlanet 1 part nutes. i have 3 auro gorilla ogs and 1 auto cheese almost a week behind the gog"s. i am almost into week 9. the gorillas all turned yellow. started on the bottom then spread to the whole plants. then got brown spots. now the cheese is showing signs of the same sort of thing. white leafs
 

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gx31 the yellowing is normal life cycle for many strains when the end is near :) some strains stay green hardly any changes in leaf color. But gorilla strains for me always faded well. Have fun.
 
im going into the 9th week. some grow diaries said they would go 10 to 14 weeks. i was very worried i hurt them again. not sure if i am feeding wrong. ph seems good after i add nutes. i use rain water. it seems to have 8.1 ph is that possible?
.
 
8,1 ? My experience this is a high number.
I know nothing about your soil. It’s not a living soil right ?
But normal the range in soil is from 6,0-7,0. Most people keep it around 6,5..

but I’m a little anxious if your PH is that high.
it’s totally possible to end an auto flower around 9 weeks. I did that myself. But when I look at your hairs - they are all white yet - what I can see on the pictures. No brown hair yet on them ?
 
What kind of pH tester are you using? I would ask the question to the forum, maybe wrong in this tread...but can pH meters accurately measure the pH of rain water. I've read places it is difficult for the meter to get an accurate reading.
 
i borrowed a bluelab ph pen to check my set up. i got a reading of
rain water ...8.,1
tap water ... 7.4
full flower nutes...6.2
5l rain water plus .5 ml ph down...6.5
i have been worried that i have nutrient lock
 
Depends on the PH meter? It should could do it, but I think the quality of PH meters vary quite a lot.
I’m using an ADWA - I’m hitting the spot every time, from what I can see on my Plants 👍🏻
 
What kind of nutes are you using ? And how much in ml to Liter? And for how long ?

What size it the pot ??
It could be an lockout. Because all your hairs in the flowers are white - so I don’t think they a quite done yet
 
i am using green planet 1 part. 1 ml/L each medi one, ocean magic, rezin, 2.5 ml/ L massive and .8 ml/L weight. i fed 3 times with water every 2nd time. i am using 5 gallon fibre pots
 
His results below show it didn't talk much pH down to drop 2 full points. So if rain water has even a tiny amount of some alkaline component...the meter reads high...as soon as .5 ml of acid is added...it can now understand the proper pH of the rain water but the acid was really only working off 7.0 pH not 8.1

So my next question is...do you need to pH test rain water if it is used in a soil grow with no nutrients...we don't on outdoor grows...rain just happens. If we believe it is 8.1 would the soil pH not go up and harm the plants over time?
 
Make a flush and remove the lockout. And try again gently with nutes. It could make a difference 👍🏻
Because they are not ready for harvest yet
 
This is my first suggestion.
Don’t thank me yet.. let’s see what happens with the flush.
They might be stunned if they have a lock out.

How do you measure your PH ? So you just put the “PH down”
In an monitor the Ph right away? Or do you wait like 20-30 min before reading the Ph ?
 
I do know tap water have stabilization in it, so it’s not going up&down all the time.
Rain water don’t, so it’s harder to maintain the prober PH level over time. This is what you are asking about right ?
 
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a friend lent me his bluelab ph pen. we checked the rain water with nutes added it was ok. that was last attempt. we changed some of my setup and my second try was doing awesome. i did not feed for the first 6 weeks. then they surprised me by flowering so fast i though i would feed flower nutes. the numbers i listed above i tested yesterday.i tested the rain water (8.1) so i added the ph down and waited. i also checked the next day and had the same result i was told rain water was cleaner but have since let a bucket of tap water stand for a couple days for chlorine to dissipate
 
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