another day, another 3/16" tubing question (for a crazy short run)

[Cjadamec]

As was said by others better than myself, gravity vacuum might not cost anything to run (gas or electricity), it will cost you man hours to maintain. There is no vacuum system that doesn't cost something thru the season. I've had 5 animal chews on one of my runs in about 3 weeks time. I'm just hoping I have enough spare fittings to make repairs for the whole season.

Its still a lot easier and quicker than collecting buckets.

[IWDaddo]

Okay, done more research on this site... so thankful for all the man (and woman)-hours that goes into these message boards. Kind of the best thing the internet does.

I have one more question, though: what is the maximum length of the 5/16 feeder tube from the tree into the 3/16 main line? The fence behind the trees would make a great support for a downward trajectory all the way along, but that would mean some of those feeders might be 6 feet in length. Is that far too long, or if the drop is good, it shouldn't matter?