Algae starting to grow

195gm Marine Salt = SG 1.012
Water @ 75*F
API ph test = 7.8
16/2/18 --------- 5ml API Quick Start (Nitrosoma and Nitrobacter Bacteria)
19/2/18 ---------- x 10 drops Ammonium Chloride
API Ammonia test = 2 ppm
21/2/18
API Ammonia test = 1 ppm
28/2/18
API Ammonia test = 1 ppm
03/3/18
API Ammonia test =  0.50 ppm
API Nitrite test =  0.50 ppm
API Nitrate test = 1 ppm
04/3/18-----------x 5 drops Ammonium Chloride
API Ammonia test = 2 ppm