Raising the lilly pipe a little creates a big aeration activity. The conical shape of the pipe creates a venturi. The water flowing through the pipe actually sucks the surrounding water. Any debries that may be present flow into the cone and then down into the tank where they are sucked by the filter.
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File size: 98393 bytes File date: 2006:05:16 03:29:55 Camera make: NIKON Camera model: E4500 Date/Time: 2006:05:13 14:11:02 Resolution: 700 x 525 Flash used: No Focal length: 19.3mm (35mm equivalent: 93mm) |
Exposure time: 0.017 s (1/60) Aperture: f/3.8 ISO equiv.: 200 Whitebalance: cloudy Metering Mode: matrix Exposure: shutter priority (semi-auto) Jpeg process: Baseline |
File Upload Date: Tue May 16 03:29:55 2006
Item Capture Date: Sat May 13 14:11:02 2006