Hydrofarm Black & White Grow Bag- 3 Gallon (Case of 20 Packs) Drain Plug Assembly Size specification is 8–16 mm

Size specification is 8–16 mm

This highly efficient method of injection helps maintain more consistent CO2 levels while saving money year round on expensive CO2 tanks

IMPROVES SOIL/NUTRIENT CONDITIONS FOR ROOT GROWTH

Improve nutrient uptake and water availability conditions

or seedling trays

Hydrofarm Black & White Grow Bag- 3 Gallon (Case of 20 Packs) Drain Plug Assembly Size specification is 8–16 mmWhite Black Grow Bags This update to our classic Hydrofarm grow bags features a new durable white plastic outer layer so you can write details like plant type, planting dates and growing notes, right on the bag! The white surface also reflects light, helping keep plants' roots cooler. These bags are a great low cost alternative to plastic pots used by greenhouse growers. And as always, they're made from a specially formulated plastic that provides for