Available with Regular resin and with Iron Control resin (make selection below). Iron Control resin is needed if you have well water or if you see a presence of iron in your water (an orange-brown residue around sink drains or toilets). It's fine to use the Iron Control resin even if you don't have an issue with iron in your water. Also, if you ever move and you do have an iron issue, you'll already have the Iron Control resin.
***To be used due to accidental loss or damage of resin in ShowerStick without built in filter basket (if purchased prior to September 2011.) Please contact us with any questions. Note: You can replace your resin with our Regular Resin or Iron Crontrol Resin