The FloraFlex FloraCap is a patent-pending revolutionary tool for top feeding that also helps eliminate algae. The FloraCap® 2.0 was redesigned to give you a more consistent flow rate, even distribution, a slightly increased air flow and improved stabilization. Place the FloraCap on top of your 4, 6 or 8 in rockwool cubes, maximizing your space in the vegetative cycle. Fill the cap with water and nutrients by hand or automate with FloraClips. The 4 in cap features 13 flower designed louvers and the 6 and 8 in cap feature 26 flower designed louvers that delivers water, nutrients and air to the medium while blocking light. The FloraCap® strategically covers the top of the media, allowing the root zones to dry at a more consistent rate and delivering the necessary oxygen your plants need to thrive. Algae disappears, healthy roots fill the medium and blossoms multiply.