Active Aqua Grow Tray HPS 4) Using a utility knife

4) Using a utility knife

Autopilot's digital CO2 controller eliminates guesswork while it controls your carbon dioxide level with accuracy and efficiency

The EC/TDS conversion factor is user-selectable as well as the temperature compensation coefficient (

Where humic acid is soluble in alkaline media only

Includes electrode

Active Aqua Grow Tray HPS 4) Using a utility knifeOur Active Aqua growing trays come in two popular sizes and make growing easy with their versatility and solid construction. Advanced channel design eliminates blockage and standing water to ensure proper and prompt drainage. They are perfect for holding Rockwool or Stonewool slabs, Hugo Blocks, Sure to Grow, or any loose growing media like peat, perlite, or starter cubes. You can also place planters into the trays. Outside Dimensions 40. 75" x 9. 75"