Mother Earth Coco Cover 8 in 1=10/Pack (10/Cs)

Mother Earth? Coco Covers are a naturally derived replacement for plastic covers. These 100% natural coconut coir fiber covers work great for preventing algae from growing on top of your rockwool blocks. Available in 6 inch squares for use with Grodan blocks. Tired of algae growing on top of your media? Mother Earth? has you covered.