GROW1 Root Elevator

A Rockwool Block Riser for Better Drainage in Trays

Lifting a grow block off the tray floor gives its root zone room to breathe. This GROW1 frame does exactly that on a 6x6 spacing, sized for 6 in rockwool blocks. Each block sits slightly above the tray surface instead of resting in the film of runoff that collects there. Water leaves the bottom of the block freely, so the base does not stay saturated after each irrigation. That shortens dry-down time and keeps oxygen moving through the lower part of the root zone. Roots that reach the bottom of the block find air rather than standing water, which favors strong, active growth. The frame is a simple open grid with posts at each corner and junction, so it blocks very little drainage. It is molded from durable recycled plastic. It works with rockwool, coco blocks and most other common hydroponic substrates. Both new and experienced growers can add it to a tray without changing the rest of the system.

Setting Up a Root Elevator in a Flood Tray or Drain Table

Place the frames on a clean, level tray before setting out the blocks. Center one block on each frame so its weight sits evenly on the posts. Line the frames up in rows, leaving a clear path for runoff to reach the tray drain. On drip systems, aim emitters at the top of each block as usual; the riser changes only what happens below. On flood and drain tables, the raised blocks drain down faster once the tray empties. Watch how quickly blocks lose weight in the first few days and adjust irrigation timing to match the faster dry-back. Keep trays level so water does not pool under one end of a row. At the end of a run, pull the frames free and knock off any root material. Wash them by hand or run them through a dishwasher before the next crop. Clean frames go straight back into service for the next round of blocks.

Key Features

• 6x6 Spacing Frame: Sized to support 6 in rockwool blocks on a tray.
• Raised Block Base: Holds blocks just above runoff on the tray floor.
• Faster Dry-Down: Free drainage keeps the bottom of the block from staying saturated.
• More Oxygen at the Roots: Air moves through the lower root zone between irrigations.
• Recycled Plastic: Durable frame molded from recycled material.
• Dishwasher Safe: Cleans quickly by hand or machine for reuse crop after crop.

Technical Specifications