Setting up an outdoor, ecosystem pond. Inspired from a stream from a mountain that I visited. Under gravel setup with the Easy Flow kit. Run with the Co-Op Air Pump with battery backup. USB solar panel. The air pump effectively operate 24/7 by itself with no additional electricity. I lived in Southern California so there is a lot of sunlight. The battery backup will last the entire night after the sun is down, and charge right back up as soon as the sun is out again. I run the air pump at 90% instead of 100%. The battery backup do not last the entire night if I use 100%. I don't think it really impact the flow. It speak to how effective the Easy Flow Kit is. One potential issue is the long-term accumulation of detritus at the bottom of the tray. A solution is to remove the curve tubing of the airlift. Insert a hose down and drain out the detritus occasionally.
Items used:
40 gallon container.
x4 8x8x16 cinder blocks.
1 bag of Pea Gravel.
ALEGI Plastic Grid Divider Tray from Amazon.
Soshine Mini USB Solar Panel from Amazon.
Aquarium Co-Op Easy Flow Kit.
Aquarium Co-Op Air Pump with battery backup.
Black vinyl tubing. *to fill in the gap between the under gravel tray and container.