Dried/yellow leaf extremity, can’t find what it is on the excess/defiency chart

Bendica
Bendicastarted grow question 5y ago
-Soil : Light-Mix Biobizz (baltic peat, white peat, black peat, sphagnum, compost, NPK 12/14/24, pH 5,5- 6,5, EC 1 -1,25 mS/cm) -Nutrients : none -Light : 18h at 40cm from a 65W dimmable LED board -Water pH : tool broken, I don’t know the pH of my water… -22°C /47%
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Leaves. Color - Yellow
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Theia
Theiaanswered grow question 5y ago
The first thing i would do would be to get a new PH tester and check the PH of what you feed the plant. Improper PH will cause sooo many bad problems Once the roots lock out its easy to mis diagnose. If you have been putting tap water ( i assume its tap) straight on with no correction i very much doubt it will be in the 6.4 ish sweet spot for your light mix. Once you know the PH is correct you can address the issues from there knowing the plant is able to take ton the nutes it needs. Hope that helps. Good luck👍
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