Master Clear Alkalinity Up (2 lbs.) startup while also extending the lifetime

while also extending the lifetime of your spa or hot tub

Select Clarity Full Filter if you need the full system

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

– Powder pH Increaser

Master Clear Alkalinity Up – 2 lb

Master Clear Alkalinity Up (2 lbs.) startup while also extending the lifetimeMaster 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