Premium Water Solutions at Number 1 Water Solutions LLC Neutralizing Filter STO1.5 Combo: Softener + Taste & Odor Ultraviolet Light Rack System (15GPM) STO1.5 Combo: Softener + Taste & Odor Making it fit in a well house with a burying tank Neutralizing Filter STO1.0 Combo: Softener + Taste & Odor Compact system that fit in places the regular filter systems will not. This is a STO with a UV light A combination salt free system for bad water conditions Check Out Our Instagram For More Pictures!!