Doobious,
hey man, glad to hear the post was of some use to you

Regarding the bulkheads, It would take forever to try to describe them, but a quick break down is this. Imagine a PVC tube that is threaded on the outside and the inside at both ends. One end has a large lip so that the tube will not slide through the hole you are inserting it in to. There is a nut and gasket that fits over one side of this tube. You make a hole in the bucket, then screw in the bulkhead fitting and then on the inside of the bucket, you place the gasket on the tube and then screw on the pvc nut. This is what makes the tight seal and prevents leakage under normal pressures.
The overall length of the tube is maybee 1 inch, so it wont be in the way. The internal diameter of the threaded pvc tube varies from 1/2" to 4" so you can be creative with tubing size. The outer diameter of the tube varies from 1 1/8" to 5 9/16" which will also give you some creativity room.
Here is the link to where you can purchase these bulkhead fittings.
http://www.aquaticecosystems.com/aquatic1v1/dir3.icl?secid=0&subsecid=120&catid=1158&orderidentifier=ID9675693250312C207D&itmcnt=45&begincount=1 &endcount=30&curpage=1&numpages=2
The average price of the fittings ranges from $4.90 to $8.00 each. You would also need some threaded and or threaded and barbed fittings to screw in to the inside portion of the tube so you can screw in or somehow secure the overfill tube. Just browse around the site, they have any and every type of PVC tube and any other item you will need to complete this setup.
Let me know if there is anything else you need to know. Good luck
420_sci
<BLOCKQUOTE><font size="1" face="Verdana, helvetica, Arial">quote:</font><HR>Originally posted by Doobious:
Hehe, I will use bulk heads... only if I knew what they were. Please inform me... I would appreciate it greatly. Maybe I know what they are, but are unsure of the term "bulk heads"
Once again, thank you for the post. I enjoyed reading such a well informed post, keep up the good work.
doob
[This message has been edited by Doobious (edited August 28, 2000).]<HR></BLOCKQUOTE>
[This message has been edited by 420_scientist (edited August 29, 2000).]