The message
from "Robert" contains these words:

No you're wrong Franz, builder's lime is no use to the garden whatsoever

You're both wrong innit.

The builder's lime I used to use was calcium oxide, and when that is
hydrated it becomes slaked lime, or calcium hydroxide, and is plenty of
use on the garden.

Assuming you want to raise the pH, of course.

--
Rusty
Open the creaking gate to make a horrid.squeak, then lower the foobar.
http://www.users.zetnet.co.uk/hi-fi/