PoolRx Yellow Spa Unit/Algaecide 100-400 Gallon Spas
The for Spa's Yellow unit supports is easy to use reduces chemical demand, improves water quality, lasts for up to 6 months it contains a proprietary blend of minerals that continuously and effectively. Simply start with fresh water and a clean filter and pick the correct sized Spa unit based on total gallons, then, drop the Spa unit into the pump basket or skimmer. The specially treated alloy cylinder is packed with the mineral formulation.?