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Brown Spots by edges of old leaves
agar312started grow question 5 years ago
Can anyone help me with why I am getting these brown spots by the edges of my old leaves?
I changed my water 3 days ago and had the PH to 5.8 and testing my PH today, it is at 6.2. The water temp is at 24.4 C and PPM at 859.
Following Cutting Edge feeding chart at 50% of the rec
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Leaves. Color - Dark-brown
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GanjaTortureranswered grow question 5 years ago
In hydro 5.2 pH is too low. 5.5-6.2 is safe. Nutesolution pH tends to rise with temperature and airing, especially if organic nutes are involved.
5.8 to 6.2 fluctuation is not problematic. In hydro some fluctuation is even preferred for optimal nutrient intake. Of course, stable pH is good but it is not set in stone at all.
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NobodysBudsanswered grow question 5 years ago
sorry, linked in my profile comments -- shared drive too. may add goodies over time.
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NobodysBudsanswered grow question 5 years ago
Could be calcium..
use my nute spreadsheet to calculate total ppms from all products used and make a more informed decision. works with %w/w too.
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Nor_Cal_Kannablissanswered grow question 5 years ago
If you choose to measure by PPM, hydro growers should begin with a solution that has 500 PPM and increase by 50 every week. The pH should be close to 5.5, and at least 5.2. Any nutrient with less than 200 PPM will be very light.
Hope this helps friend.. 👊
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