We've decided to get rid of the "frog pond" we've had for over thirty years, it's as old as the former koi pool. The problem as you will see from this photo taken earlier in the year, is that the roots of the big acer palmatum have pushed up the perimeter coping slabs The problem as you can just about see from this photo taken earlier in the year, is that the roots of the big acer palmatum have pushed up the perimeter coping slabs by several inches, which I set on a thin concrete collar around the pond. The drainpipe I fitted to the pool between the slabs and the liner for the pool to overflow through when it needed to, is now three inches higher than the water level. We're also concerned that when we open the door in the fence to let 'arry roam, other hedgehogs are likely to come into the garden. Over the years, one hedgehog drowned in that pond, despite the fact that it has had rocks at one end for decades to let new frogs get out. Fortunately, hasn't fallen in yet, although he's all over the rockery, as sometimes he leaves his "calling cards." Hedgehogs are known to be able to swim, but they can still drown if they can't find the provided escape route. We used to have a lily in this pond, but as the acer has grown, it was permanently in the shade and didn't do well. I gave it to a neighbour three years ago for his goldfish pond and it's thriving. We've had fewer and fewer tadpoles in the pond over the year and this year's small clump died off. So my plan is to remove most of the perimeter slabs and the collar and liner. Fill in the hole and use the perimeter York stone slabs to pave over it leaving more space for the acer. We've still got some water with fountain. We'll still get some frogs in the garden as we always used to get them before we had any water in it.