Senior fisheries Biologist
Using this water softening resin a 125 gallon aquarium filtration system to lower hardness for discus. The fish prefer low hardness water ( native to the Amazon River).
Resin product quality is excellent and I used women's nylon knee high socks for simple retention of the resin media in a multi-layered canister filter.
Reviewed by: Thomas Johnson from Lubbock, Texas.