Haven Spas High R Value foil insulation. Sold by the foot.  Ideal for do it yourself, if you have a not full foam spa that needs more insulation, like a mass merchant spa. Huge difference in electric consumption.

Havenmade Super Foil Spa Insulation This can save you 60% or more on your electric bill in winter.  Easy to install with a stapler. Dont Forget to add a thermal blanket also

This is for the "do it yourself" people who want to properly
insulate their thermal pane spa.  This material has an effective
R-value of 14 when used with an air space. This is truely "space age"
insulation. 

Chlorine, Bromine DPD #1 Yellow top

Taylor Reagent number 2 for DPD Chlorine and Bromine

Taylor Total Chlorine Test DPD #3

TTaylor Red top pH Test for the 44 ML test block

Taylor R0005 pH Testor the 44 ML test block Acid Demand Test 3/4 oz

Taylor R0006pH Testor the 44 ML test block Base Demand 3/4 oz

Taylor R0007 Total Alk Reagent 3/4 oz Green Thiosulfate

Taylor R0008Total Alk Reagent 3/4 oz Green Indicator