Leisure Time 22338 Spa Down, 2-1/2-Pound $8.99
http://www.amazon.com/Leisure-Time-22338-Down-2-Pound/dp/B000V8BUBE/ref=lp_127
2941011_1_10?s=lawn-garden&ie=UTF8&qid=1417378506&sr=1-10
2-Pack Hot Tub Spa Bromine Tablets 2 x 1.5 lb. bottles (3 lbs. total) $21.94
http://www.amazon.com/2-Pack-Bromine-Tablets-bottles-total/dp/B00AW3BFP4/ref=sr_1_2?s=lawn-garden&ie=UTF8&qid=1417378704&sr=1-2&keywords=bromine
Leisure Time 45005 4 way Bromine Test Strip, 50 Count $12.16
http://www.amazon.com/Leisure-45005-Bromine-Strip-Count/dp/B000PSBAOM/ref=sr_1_4?s=lawn-garden&ie=UTF8&qid=1417378799&sr=1-4&keywords=spa+test+strips
Floating Bromine or Chlorine Tablet Dispenser for Small Swimming Pools or Spas $10.54
http://www.amazon.com/Floating-Bromine-Chlorine-Dispenser-Swimming/dp/B007FSAY4W/ref=sr_1_1?s=lawn-garden&ie=UTF8&qid=1417378908&sr=1-1&keywords=bromine+dispenser