1-Stage Whole House Water Filter, with Iron Manganese Reducing Water Filter, for Well Water, Universal Housing
Aliexpress UK
There’s no venturi or expensive filter needed for this system to remove the unwanted odor from your well. Installation is straightforward, just connect the female garden hose fitting on the Sulfur Diffuser System to the male spigot at the well, remove the existing 1/2in npt plug/vent on the top of the well seal, then place the misting nozzle down the hole and turn the spigot faucet on.
eBay