Yellow leaves top to bottom. HELP :-(

What is causing this

  • Total voters
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K

karmeron

Active Member
Polecat said:
My info comes from Ed Rosenthal's book MJ growers handbook.It claims that 5.8 to 6.5 is the best PH for soil grows.

Since I got his book my problems have gone down and my plants up. Good info is like finding some stashed nug . It's thier just have to find it. I couldn't. Thats why I got a book. Jorge's next.
Click to expand...
I actually have a copy of Ed Rosenthals marijuana growing tips on my pc and my copy says "so try to keep the pH of the water
between 6.3 and 6.8."

And the cannabis grow bible 4th edition says "Cannabis plants like a steady pH of around 7."

And Mel Frank And Ed Rosenthals - The Marijuana Growers Guide says
"conditions. For healthy, full, growth, marijuana prefers a medium with good drainage, high in available
nutrients, and near a neutral pH (7.0)."

And Closet cultivator by ed Rosenthal says:
"Once the water is tested gardeners
adjust it if it is not in the ideal range of 6.2-
6.8"


LOL, so much conflicting info out there, its crazy. For every theory out there you will find an even amount of opposite theories :) Even in this thread there is so many different viewpoints, its very hard to know what to do.

I Watered today with 5ml/L grow and 5ml/L bloom @ PH 6.6 to see if it is just a straight defeciency, if it stays the same or gets worse I will flush and then go back to the standard formula. I read on another forum of a guy with the same soil and nutes that had the exact same problem as me, he fed with same dose as me today for 3 feeds and problem was gone and most leaves recovered. So il try that. If that or a flush(followed by low/normal dosage nutes) doesnt work then im stumped :(
 
rucca

rucca

Active Member
karmeron said:
I actually have a copy of Ed Rosenthals marijuana growing tips on my pc and my copy says "so try to keep the pH of the water
between 6.3 and 6.8."

And the cannabis grow bible 4th edition says "Cannabis plants like a steady pH of around 7."

And Mel Frank And Ed Rosenthals - The Marijuana Growers Guide says
"conditions. For healthy, full, growth, marijuana prefers a medium with good drainage, high in available
nutrients, and near a neutral pH (7.0)."

And Closet cultivator by ed Rosenthal says:
"Once the water is tested gardeners
adjust it if it is not in the ideal range of 6.2-
6.8"


LOL, so much conflicting info out there, its crazy. For every theory out there you will find an even amount of opposite theories :) Even in this thread there is so many different viewpoints, its very hard to know what to do.

I Watered today with 5ml/L grow and 5ml/L bloom @ PH 6.6 to see if it is just a straight defeciency, if it stays the same or gets worse I will flush and then go back to the standard formula. I read on another forum of a guy with the same soil and nutes that had the exact same problem as me, he fed with same dose as me today for 3 feeds and problem was gone and most leaves recovered. So il try that. If that or a flush(followed by low/normal dosage nutes) doesnt work then im stumped :(
Click to expand...
Awesome, you start feeding a lot - I stopped feeding and flushed - I'll let keep you posted
 
K

karmeron

Active Member
just did the second big feed today, no change yet, its not any better or any worse :( will try a flush on weekend if no change by then.
 
rucca

rucca

Active Member
flushed once yesterday, have not fed for a week... honestly it is too late for me to post any relevant info - week 8 flower
 
K

karmeron

Active Member
I flushed 1 plant today with PH 6.6 water and a small feed after that, so I'll see how that 1 plant is in a few days. If that plant improves, il flush the rest of them. The others are showing no change, no worse no better :(
 
K

karmeron

Active Member
ok the 1 plant actually improved. so i flushed the rest today and fed. too bad i would have destroyed the bacteria etc in the soil though. I'll have to watch for N Deficiency. Thanks for all the help.
 
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