Such a large aquarium is enough. Your water turns white because there is too much bleaching powder in the water rather than a lack of oxygen. Too much bleaching powder will cause the fish's oxygen absorption capacity to decrease and damage the protective layer. its surface
I suggest that when you change the water in the future, it is best to let it bask in the sun for about 3 days. If you find this inconvenient, use solar water to cool it, then. change the water
Also, guppies are docile and don't let them mix with Red Arrow. Raising red arrows will bite him
I wish the fish health! ! ! !