"Lee Nowell" wrote in message
...
On 10 Aug, 17:11, Jules Richardson
wrote:
On Tue, 10 Aug 2010 15:53:08 +0100, Phil L wrote:
Why not just do it like I've drawn in this diagram:
http://tinypic.com/view.php?pic=25ja9gn&s=4

Each butt fills to the top, then overflows into the next, simples.

That means you need a tap on each butt, and you need to keep drawing
water from each butt in turn to avoid water sitting around too long in
any given one, surely? Having them connected at the base would avoid both
those issues (but the OP just needs to have all three butts on the same
level)

cheers

Jules

Thanks all for your suggestions... As many have said, I guess the
best option is to join them all at the bottom. I was trying to get out
of the scenario of having to have all 3 go to the minimum level for
the submersible pump before being able to use it. I guess there isn't
an easy answer...... Thinking about it further, I think I will fit
valves on the connections so at least I can restrict to 1 or 2 butts
in dry weather...
Bung a washing machine pump below the pipe you join the butts with.