Apply too much nitrogen and henbit and chickweed have a field day. Annual bluegrass and nut sedge thrive in wet, waterlogged soils. And weed seeds of all types will readily germinate in areas of sparse grass growth. thicker lawn can improve all these conditions, meaning better weed control with less herbicide use. When air, water and nutrients can more easily reach the root zone, a series of very beneficial events begins that allow all the stuff you’re applying work even better. You may even need to do less applying in the long run if more of what you apply actually gets where it’s supposed to and does what it’s meant to. Fine bubble aeration is an efficient technique of aeration in terms of oxygen transfer due to the large collective surface area of its bubbles.