To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
Amazing product, i am an experienced fish keeper who has till now only used API product. This was my first experience with seachem product and boy i have become a fan. Results were surly noticeable with in 2 days. I am happy as a clam in high water