In coco I give nutrients every day. I vary my mixture every watering. I always give cal mag (every watering) I use the fox farm trio plus cal mag and micro brew so I will give micro Brew once every other week, I give grow big at a reduced amount with every watering, big bloom every other watering. With coco, what you feed is the only nutrients the plant gets unlike soil that contains nutrients so I like to give them some nutrients every day. I give reduced amounts compared to the ff chart but it works well for me.