Then its a coco setup. I've never grown in coco.....I understand it has it's own set of rules to play by. And I'm not sure that 5-ish is the ph you want for a coco grow. Hopefully someone who uses coco can help you out better there. Fill out the troubleshooting form at the top of the forum for better help. Sorry I'm not more help myself but I've never touched it.....don't they make special coco nutes?