Can I refill a Bloom Farms cartridge once it’s empty? December 28, 2021 21:34 Updated Bloom Farms cartridges are not designed to be refilled. This ensures quality and consistency while minimizing the chance of leaking. Related articles Cartridge: Guarantee Cartridge: Troubleshooting How should I store Bloom Farms cartridges? PAX Pod: Troubleshooting HIGHLIGHTER® Battery & Cartridge: Capacity & Specs