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I am growing in Roots organic Soilless Coco mix My...

Inganjawetrust
Inganjawetruststarted grow question 6 years ago
I am growing in Roots organic Soilless Coco mix My water going in has a pH of 5.8 runoff is coming out 6.7 to 6.8 and I think I have a nute lock out how can I correct
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Week 2
Leaves. Other
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HighTV
HighTVanswered grow question 6 years ago
Howdy there @Inganjawetrust The first thing to do is determine if you actually have nutrient lock out then go from there. If you are starting to see a rust-like Necrosis(dying) of the leaves on the larger fans leaves then this is the primary sign of PH fluctuations which can cause Nutrient lockout among other things. The simplest way to avoid this is to feed half as much twice as often - this lets you readjust the PH twice as often reducing the window change significantly. However if you are NOT experiencing the Necrosis as I mentioned above then the symptoms of nutrient lockout you are experiencing are not due to PH fluctuations, but rather a buildup of nutrients in your coco. EITHER WAY the best solution to a nutrient lockout is to flush your plant with pure water PH'ed at 5.8 for a few days. If you have access to a flushing additive these can assist in breaking down nutrient salt buildups to speed the flushing process along (However this is option to save time). Be sure to update us with the results @Inganjawetrust! 😎
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MUDBUG
MUDBUGanswered grow question 6 years ago
You dont have a problem yet its just buffering thats all you are overwatering tho those leaves is the first sign your ph is good just cut back on the waterering wait a extra day are two just cut those leaves off lack of light is also if this was a ph problem all your leaves would be affected not just your lowers clean her up and kick it back a notch on watering and u will be fine👍👍👍✍️✍️✍️✍️✍️
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OutForReal
OutForRealanswered grow question 6 years ago
Hello ! I experimented Ph fluctuation in coco but the ph was always lower in the runoff than in the input. My advice is to continue to water with 5.8 Ph'd water with 30% runoff and no more. You should test your EC runoff to know if you have a nutient lockout or not , it's the best way to know as a ph fluctuation is not always due to a nutrient lockout. I hope it will help you 😁👍
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CRiSPrGrow
CRiSPrGrowanswered grow question 6 years ago
hey @Inganjawetrust , i'm guessing you're using some sort of root juice right? sometimes these things are based from kelp / sea weed and they raise the PH in the medium leading to the PH fluctuations causing lock out. You want to start replacing that feed with either an enzyme like canazym or something like humic + fluvic acid (chelation agents) that will do the same thing, but wont cause problems, and actually they should fix this. Hope this helps ! 🚀
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Stick
Stickanswered grow question 6 years ago
Hi @Inganjawetrust! Something is wrong with your medium, you probably have some salts buildup impacting the pH. There's only one solution to solve this: flush your medium. Give it a good flush with ~50% of the container's capacity, only plain pH'd water (5.8 is fine). Help the medium to dry with a small fan blowing a continuous breeze on the container, and see how it goes after a few days. What nutrients have you been giving, at what frequency, what was the EC? Please give us more info about the past feedings so we can help you adjusting those parameters. Hope this will help, keep us up-to-date and happy growing 👊
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