ph i clay and coco

iv currently got my ph to 5.5 using clay pebbles and coco, some1 recently suggested my ph should be 6 - 6.2 my leaves are now turning yellow. should i up my ph to 6 - 6.2 using coco.?

Mate I run mine at 5.8 & they are doing great!! 60/40 gold label mix & Canna coco a+b. Best lookin girls I ever had. Am 2 weeks into flower right now.

I agree, 5.8 for coco. It's what I've always ph'd my coco to!