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greyish curling leaf tips and dieing branches after topping

1juan420started grow question 1y ago

the highest branches died after topping. It looks to me like they had the same symptoms like some new upper branches are developing now. It looks very dark & feels soft Temps were 17-19°C & Humidity was be 5.90%+ Water should 9, think ph reader might be wrong and ph is too low?

1juan420

1juan420

1juan420

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Leaves. Color - Black or grey

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Spike-GreenGroweranswered grow question 1y ago

Hi bud. Looking at your diary, it seems you've been having nutrition issues for a while. Unfortunately you don't mention which BioBizz nutrients you are using nor how much and how often you are feeding. 75-98% RH humidity?? Is this correct? No matter the feeding, I can imagine humidity above 70% rh is driving her nuts. And then the PH.... you use soil and give her water ph'd to 9? PH above 7.5 can cause the roots to stop up-taking nutrients. That may be what you are experiencing. Generally, the ph of the water should be around 6.5 with runoff no higher than 7.5 Or is there a reason you run the water so high?

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greyish leaftips and dieing branches after topping the highest branches died after topping. It looks to me like they had the same symptoms like some new upper branches are developing now. It looks very dark & feels soft Temps were 17-19°C & Humidity was 90%+ Water should be PH5.9, think ph reader might be wrong and ph is too low?

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