Pond Boss Forums MANAGING AN EXISTING POND Fertilization Fertilizer advice

Where in SC is your pond? Need to know your water quality, primarily alkalinity to be sure fertilization will be effective. You also mentioned 'marsh grass'- if you have aquatic vegetation, depending on the type and amount, you may be fertilizing the vegetation especially if you have low alkalinity. While we see alot of black water ponds with good water quality, we see equally as many with low pH, low alkalinity and hardness which will negate fertilization efforts.