GMG Infrared Temp Gun Type_Topside Control you need both

you need both

The XL cartridge holds enough chlorine to meet that demand for 3–4 weeks at a time without running short — which means fewer cartridge swaps

Add one bottle when you fill your spa and its plant-derived enzymes go to work conditioning the water — softening it

but it doesn't burn off that organic load — and when it builds up

utilize the superior heat conductivity of the Cast Iron Cook­ing Grid as an alternative to the primary Stainless Cooking Grid

GMG Infrared Temp Gun Type_Topside Control you need bothGMG Infrared Temp Gun Overview You need to know exactly when your pizza is done! Let the Green Mountain Grills Infrared Temp Gun help you do that! Simply aim the laser at the object you wish to read and boom! The temperature will appear on the easy to read screen! Whats in the Box 1 x Green Mountain Grills Infrared Temp Gun 9v Battery Instruction Manual Features Backlit Screen Temp Ready out: Fahrenheit or Celsius Reads temperature range of 58 to