After the mermaid

This is what it was all about :
1) need for a place to put firewood;
2) had to move the water butt as well as the mermaid;
3) fix the water butt where the mermaid had been, and join that up to the down pipe and gutter taking the water from the greenhouse roof into the tank inside the greenhouse, so that it acts as the overflow.

This is why every job takes so long!