@Canna96,the bottom 3" of the bucket is chunky perlite only making a reservoir. i feed thru the tube to to get liquid straight to the bottom. The key is that i have a hole in the bucket 2.5 inches from the bottom.I feed through the tube until i get liquid draining out of the hole. That way i can keep a semi consistent feeding schedule without over saturating the coco. -cheers friend