Grodan Gro-Smart Tray Insert -monitors-&-timers If the level decreases down

If the level decreases down below 200 ppmv in an enclosed growing area

Includes an 8' power cord

Fully submersible

Providing all of the benefits of liquid molasses with none of the mess

Grodan Gro-Smart Tray Insert -monitors-&-timers If the level decreases downYour Grodan Starter plugs, Mini Blocks and Gro Blocks have finally found a home. This durable Dutch tray has double sided features. Use the 78 cell side to perfectly fit 1. 5 in A OK Starter Plugs or round Macroplugs. Use the mesh side for sheets of A OK's, Mini Blocks, or Gro Blocks. The tray fits in a standard 10 x 20 flat and keeps the Grodan elevated from the bottom of the flat. Easily sanitize as any hard plastic product; even dish washer safe!