Seachem | Pond PrimePond Prime 500 ml The 500 ml Seachem Pond Prime is the optimal conditioner for pond environments and their sensitive inhabitants. Helps to remove harmful chemicals such as chlorine, chloramine and detoxifies ammonia, nitrites and the variety of heavy metals commonly found in tap water. Additionally, this conditioner contains essential ions and stimulates the natural slime coat of your pond inhabitants, an essential element for fish and their long term