It also helps to not have too much water so you don't waste your chemicals
Product type: Algaecide
Waterway 150SF CLEARWATER II/PRO CLEAN FILTER CARTRIDGE
Chemical Composition: Trichloro-s-triazinetrione
Taylor Technologies K-2000-6 K-2000 6/BX STARTER HIGH DPD PROFESSIONAL TEST KIT Category = Pool Parts It also helps to notTaylor Technologies K 2000 6 2000 Starter Test Kit; Total Bromine Free and Total Chlorine pH with Acid Base Demand Testing Parameter, DPD DPD Phenol Red Test Method Product Specifications Brand Taylor Includes (1) 2004B, (1) 5136, (1) 7047, (1) 7049, (1) 7112K, (1) 8026, (1) 9056, (1) R 0001 A, (1) R 0002 A, (1) R 0003 A, (1) R 0004 A, (1) R 0005 A, (1) R 0006 A Item Test Kit MethodChemistry DPD, DPD, Phenol Red Range 2 20 ppm (Bromine), 1 10 ppm