API® POND pH Down®

Makes Water More or Less Acidic As Needed! Slowly lowers pH of pond water, which can changed from day to day Will not harm delicate fish or pond plants Phosphate-free and does not promote algae growth Test Water With Wide Range Test Kit Before Adding   pH Down - 16 oz. - pH Down   PondCare's Technical Reference Sheet States: Purpose And Benefits: pH is the measure of the acidity in pond water. A pH reading of 7.0 is neutral, a pH higher than 7.0 is alkaline, and lower than 7.0 is acidic. Acid rain, mineral leaching, soil runoff and decomposing plant and fish waste can alter the pH and cause unacceptable levels. Some sources of tap water used to fill ponds can also cause extreme pH levels. A pH below 6.8 or above 8.0 should be avoided. A pH level of 7.0 to 7.5 is ideal. pH levels of less than 6.8 can stress pond fish and suppress the activity of the biological filter. A high pH of more than 8.0 will limit the ability of many plants to absorb necessary nutrients. Pond C