In article ,
"Mary Fisher" writes:

We did that too - but so that we could put a watering can under the tap to
fill it. It was a bonus that we could run a hose down the garden from it.

Another solution is to have another one - or more - butts round the gaden,
all connected. That way the level in each is equalised.

The water we get from the roof is so clean I'd be prepared to drink it raw.
If there are any solid deposits they must fall to the bottom of the butt
because we never see any - nor do we from the water we collect in another
butt from the greenhouse roof.

Mine looks clean too. However, I wouldn't drink it as I suspect
the salmonella (and doubtless other things) will have washed out
of the bird **** into the water.

--
Andrew Gabriel