Robertsanswered grow question 3 years ago Coco is hydro is a bag. So yes you should have run off every feeding. I grow in coco. The secret is in your ph and coco moisture. Coco is never suppose to get dry. Vegging ph 5.8 in and 5.8 ph run off out. Flowering 6.2, 6.3 in and same out. These are optimal ph range for nutrition absorption in the stages. You can not OVERWATER in coco. I grow in it a lot. You can dump 10 gallons through it right now and it would be fine, then again tomorrow, and still fine.. Just never leave them in run off. You should of set your ph in coco in beginning. That is basics from experience growing in it daily.