Place the revolutionary FloraCaps™single use on your 6", Rockwool cubes and maximize your space in the vegetative cycle. Specially designed cutouts block light while allowing air, water, and nutrients to your plants. The FloraCap™single use was designed with the vegetative state in mind but has proven a worthy tool for the avid top feeder throughout the flowering stage as well. Eliminates algae and the use of pesticides by covering the media. -specially designed cutouts -Built-in overflow system where excess water and nutrients are delivered straight to the rootball. -360 bottom lip directs all water and nutrients to your plant. -Stackable. -BPA and lead-free plastic. For best use: Use a Y Filter to avoid clogging. (FloraFlex™Filter coming soon)