Grodan Gro-Smart Trays - 78 Cells 2' x 4' When placed on top

When placed on top

Includes "filter saver" brass hose bib connector

it immediately revolutionized the standard in pH measurement

quieter than same-size fans

Generates significantly less heat than HPS and MH at the same wattage

Grodan Gro-Smart Trays - 78 Cells 2' x 4' When placed on topGrodan Gro Smart Tray Insert The Grodan Gro Smart Tray Insert is the ultimate solution for housing your Grodan Starter plugs, Mini Blocks, and Gro Blocks. Designed with durability and functionality in mind, this Dutch tray offers double sided features to accommodate various growing needs. The 78 cell side of the tray is specifically designed to perfectly fit 1. 5 inch A OK Starter Plugs or round Macroplugs, providing a secure and snug fit for your