Refinement Filter ADD Filter Extension:Standard Cost-Effective: This easy-to-build solution can

Cost-Effective: This easy-to-build solution can help reduce heating costs by minimizing wind penetration

The Original ExHale CO2 Bag is designed for small to medium sized grow spaces

and other pests or diseases

Extending Growing Season: In cooler seasons or colder climates

Soil volume: 6 ft - 10

Refinement Filter ADD Filter Extension:Standard Cost-Effective: This easy-to-build solution canThe BVV Refinement Filter is a stainless steel filtration system that provides large scale, high flow filtering, with greatly improved functionality compared to a traditional Buchner filter. This includes the Refinement Filter only. Does not include the 20L collection base. Please note, the Refinement filter alone does not have a vacuum port. You must pull vacuum through a secondary vessel if you are not using the 20L collection base. Key Features: