One of the requirements for setting up your own aeration system is a good oxygen flow meter; such as the one listed here. You will also need the next piece (shown below the flow meter); to connect to the side of the flow meter and then to the oxygen regulator. The flow meter is the device required to regulate the amount of oxygen that flows into your live haul tank. You will connect this to a regulator and then to the aeration system. (The last piece is the Christmas tree fitting for the outflow portion of the flow meter; I believe it ships with the flow meter; but an extra piece wouldn’t hurt. They are fairly fragile. These fittings are compatible with clear plastic tubing.

At the time of this listing the flow meter was $40.00 plus shipping.

http://www.wtfarley.com/Oxygen-flowmeter-0-15LPM-_p_616.html

Oxygen flowmeter 0-15LPM     Part Number OF-1021     The fittings are as follows for the flow meter.

Hose Barb Connector NPT Female  1/4 NPTF x1/4″ Dia.     This part is for the side of the flow meter and is used with tubing to attach to the oxygen regulator (see sample photo bottom of the page).

Xmas Tree (Green Color)  Part Number MF-X-25-G     This part fits on the bottom of the flow meter and is compatible with different sizes of tubing.

SAMPLE PHOTO of aeration system.   This particular system used 3/8″ adapted down to 1/4″ tubing.

For the regulator; I use the basic oxygen regulator found at Fleet Supply stores; or online on the internet at Harbor Freight; ( http://www.harborfreight.com/catalogsearch/result?q=oxygen+regulators) or you might already have one that you would use in combination with your welding equipment.  You will also need one fitting for the regulator to use the tubing (usually ¼” ) to fit the flow meter to the regulator. I found one here: http://www.glasscraftinc.com/home/gla/page_24655

Hopefully the web pages will be available; if not just do a search for oxygen regulator fittings.

Hose Connector for Oxygen to fit 1/4 ID Hose

12100-O

Slip-fit connections connect the hose to the regulator or the torch with threaded connections. Right-hand threaded for oxygen connection. Suitable for hose with 1/4″ inside diameter.

Once you have the aeration system built, you can simply add tubing to a piece of soaker (garden) hose and the air will bubble up when the tubing is weighted with most anything; such as a piece of re-bar. Allow about 10′ of tubing before you add the soaker hose. I use quite a bit of soaker hose and re-bar and bend it slightly to make a U shape to encompass a wider area in the bottom of your tank. The soaker hose length should be about 6′ to accommodate a large amount of air bubbles.