ESV AQUARIUM PRODUCTS B-IONIC 2-PART CALCIUM BUFFER SYSTEM 2 GALLON (1 GALLON EACH) Hanna Instruments The COR-20 puts out great

The COR-20 puts out great flow while at the same time being super-stingy on power making it friendly to you wallet and the environment

This means that your pump (and motor) will run 1/4 the time to pump the same amount of fluid

Competitively priced (In USA just $174

New PMUP with improved longevity and reliability

Bio balls are the best for gas exchange

ESV AQUARIUM PRODUCTS B-IONIC 2-PART CALCIUM BUFFER SYSTEM 2 GALLON (1 GALLON EACH) Hanna Instruments The COR-20 puts out greatMaintaining proper balance of calcium and alkalinity is important to the health of all organisms living in your aquarium. The 2 part B Ionic Calcium Buffer System is the original, unique, easy to use, two component liquid supplement system that has been formulated to provide highly concentrated calcium and carbonate alkalinity, as well as all other important major, minor, and trace elements in the proper ratios to maintain a healthy marine aquatic