[PH-value in passing water / sewage]

i use biobizz-coco

and use advanced nutrients (2. bloom-week) with 1.2 EC.

[PH-value in passing water / sewage]

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