Master Clear Alkalinity Up (2 lbs.) startup Select Clarity Full Filter if

Select Clarity Full Filter if you need the full system

Compatible with all 6'

The new Eco Pur Charge Filter is the replacement for all previous Eco Pur Mineral cartridges for Master Spas hot tubs

– Powder pH Increaser

7' & 8' Twilight Series Hot Tubs (Model Years 2008-2024)

Master Clear Alkalinity Up (2 lbs.) startup Select Clarity Full Filter ifMaster Clear Alkalinity Up 2 lb. Powder Alkalinity increaser Master Clear Alkalinity Up is a powder that can be added directly to your spas water or can be dissolved in water, to increase the alkalinity levels in the spa. The primary component is sodium bicarbonate (which is the best method for raising alkalinity). The ideal Total Alkalinity range is between 80 & 100 ppm, with a tolerance range between 60 & 180 ppm. Alkalinity is most important in