KOITOILET™ I
The most versatile and complete solution
for Aerated Koi Pond Bottom Drains $215.00
One of the main reasons for a bottom drain is to capture and remove the sinking organic material before it decays and creates a mulm at the bottom that will end being a great home to pathogens. You want a bottom drain in the bottom of a pond for the same reason as your toilet has a hole. Both capture and remove organic wastes (flushing) before they decay and create nasty health problems. So the bottom line is that a bottom drain will be one of the best ways to keep your pond healthy, thus healthy Koi.
Below are some guidelines for gravity flow rates on bottom drain pipe sizing:
- 3" pipe should optimally have a max flow rate of approximately 1800 gallons per hour and will cover an area around drain 8' radius.
- 4" pipe should optimally have a max flow rate of approximately 3400 gallons per hour and will cover an area around drain 10' radius.
If your pond for example is 9'x12' one bottom drain would work with a 4" line. Now with 3" lines then a total of 2 drains would be ideal.
Now if you have a pond for example of 12"x 20' then we recommend 2 drains if using 4" pipe. Now with 3" lines then a total of 3 drains would be ideal.
Don't forget the TPR's and GPR's in aiding the movement of debris to drains.
KOITOILET™ II
The Simple Solution for Koi Pond Bottom Drain
| ◙ | Made of heavy duty injection molded ABS. |
| ◙ | Thick flange and liner ring for better liner grip. |
| ◙ | Flare design for smooth flow. |
| ◙ | Fits 4 inch Sch40 PVC Elbow or Coupling. |
| ◙ | Excellent for liner and concrete installation. |
Price $55.99
Rhino Bottom Drains
One the best bottom drains on the market!
Quality materials and superior construction differentiates the Rhino over other Spindrifter type drains. A few of the problems associated with the Spindrifter have been alleviated in the Rhino design including;
- Thicker flanges and liner attachment ring that will not flex or crack
- All attachments are machine fitted for extra strength with no need for gap filling
- All joints are hand welded resulting in more strength than the speed welds used on the Spindrifter
- 3" height over the horizontal discharge port for more concrete over the horizontal discharge port (the Spindrifter requires a collar to increase the height over the drain)
- Direct pipe connection into the air bladder (the Spindrifter requires you to snake an air line through the pipe)
- Rhino air drains contain an air check valve to prevent water entering the air line.
- Rhino drains are American made and cost less than the Spindrifter!
Rhino Series I drains are vertical discharge in your choice of 3" or 4"?pipe.? The Rhino II air drain is 4" ported, horizontal discharge.
| Item # | Description | Price |
|---|
| 835 | Rhino I 3-inch Bottom Drain | $79.00 |
| 1419 | Rhino I 4-inch Bottom Drain | $89.00 |
| 836 | Rhino II 4-inch Drain w/Air Diffuser | $325.00 |