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Hi there. the irrigation water is ajusted to 5.9 when i measure up the water that is passing the coco (the sewage), the ph-value is between 6.5 and 6.8. the girls are growing well, and looking beautyful. but i could not anderstand, what is happening inside the coco, that the ph-value is climbing up so high. is it right or wrong ? wich ph-value consits real in the coco-substratum ? i dont now how to test that. thanks for answers