This study aims to determine during storage at room temperature to the quality of seaweed jam (Eucheuma cottonii) the fortified powder Chlorella sp. The method used in this research is experimental method with method Group Randomized Design (GRD) non factorial, the treatment is type Chlorella sp. which weighs differently that is C0 with (0 gr Chlorella sp.) as a control C1 (1 gr Chlorella sp.) …