New user with algae

[DMAC8160]

Your response is very much appreciated. I am using Dichlor and did not realize it also included stabilizer. I thought just the Trichlor tablets added stabilizer. Good information to know. I bought the HTH 6-Way test but it didn't include strips. Even after a 1/3 water drain and refill, my CYA levels are over 150. The PH level is 6.8 total Alkalinity is 80.