Individuals with normal color vision will see a number, while those with a deficiency do not see it. On some plates, a person with normal color vision may see one number, while a person with a deficiency sees a different number.
Your phosphate level should be at or below 100 parts per billion (ppb). If your water chemistry and phosphate levels seem to be in check, one potential cause of the cloudiness in your pool could be dead algae. Phosphates are the food supply for algae, thus high phosphate levels promote algae growth.
Causes of green algae. Unlike the other algae, green algae isnât necessarily a sign of poor tank conditions. It can be unsightly, however. The cause of huge blooms is phosphate and nitrate in excess of what can be taken up by the tank plants, perhaps because of excess feeding, fertilisation or crowding of the aquarium.