Rockwool Block Covers - 6 in.
For Use with 6 in. Gro-Blocks - Pack of 40 - Hydrofarm HGCOV6
The dual purpose, Hydrofarm HGCOV6 block covers are specifically used for 6-inch rockwool or stonewool gro-blocks. With the white side reflecting light back towards plants and the black side blocking light from the media, these block covers reduce algae, pest problems, and mildew while enhancing the growth proficiency. Pack contains 40 dual-sided block covers.
|MPN (Part No.)||HGCOV6|
|Use With||6 in. Gro-Blocks|