This study aimed to determine the effects of various techniques of magnetized water on the water quality, broodstock, egg production, fry quality, and growth of red tilapia in Egypt. The red tilapia broodstock was divided into three cement ponds, each of which was divided into two hapas (2m × 3m × 1m), corresponding to two replicates for each treatment with a total of six hapas; each one was stocked with ten fish. Submersible pumps created a closed water circle. Commercial diet containing 44% protein was used to feed the fish. Male and female broodstocks weight 230 ± 20 gr and 200 ± 20 gr, respectively. Length of male and female broodstocks was 25 ± 5 cm and 20 ± 5 cm, respectively. Two types of magnetic water were compared with normal water for each of the three groups of fish. Group A is the control group (untreated), group B was treated with magnetized water (treated with the Neferttari magnetic device) and group C was treated with a solution of paramagnetic minerals.