When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

Grow t 6\" Coco Caps Pack Of (10) Brand New Sealed:
$7.99

An alternative to plastic covers for Rockwool blocks. Use Coco Caps to help prevent light penetration that may cause algae growth.