Black venom

So got down to the problem as to why they were growing so slow been feeding them mouldy rootbooster and she stopped drinking the feed and the coco must of gone stagnate lack of oxygen getting to roots Have now flushed them and gave them fresh feed and let me tell you four days ago she looked a mess removed loads of leafs except for two all the new green that come through is all new growth Another week am going to flower her have lost two weeks of growth and was hoping to flip this week thats all gone to pot