Waterway layout illustrated
-Green : 3 outlets to inside the pond. They blow under water level.
-Blue : single outlet to the very top of waterfall.
-Light blue : double lines to 2 different sections. It utilize excess water from the main blue line.
Each line is controlled by individual ball valve for fine tuning.
With many outlets at different positions I can make sure that there will be sufficient circulation within the pond which is desireable in accordance to CO2, nutrition and other issues.