I have a small pond and it was built some 15 years ago. It has a mixture of goldfish and koi in it that were all purchased when it was built. The fish have now become large but unfortunately I can't make a bigger pond due to lack of space so I wondered about extending the depth by building a higher wall around it.
The liner is a heavy butyl rubber version that is held in place by a wall at one end and slabs around the other three sides.
Obviously a new liner is needed but do I lay one over the existing one? Join Butyl to the existing one to extend it or what would you suggest?
I don't want to spend a fortune in doing it and I haven't got anywhere to move the fish to while its done. The good thing is that my existing filter box and pump will easily cope with a larger volume of water.![2018-06-18 14.57.34.jpg 2018-06-18 14.57.34.jpg](https://www.gardenpondforum.com/data/attachments/80/80033-ce233329d4b04ca622a0e823a7a2a0d8.jpg)
The liner is a heavy butyl rubber version that is held in place by a wall at one end and slabs around the other three sides.
Obviously a new liner is needed but do I lay one over the existing one? Join Butyl to the existing one to extend it or what would you suggest?
I don't want to spend a fortune in doing it and I haven't got anywhere to move the fish to while its done. The good thing is that my existing filter box and pump will easily cope with a larger volume of water.
![2018-06-18 14.57.34.jpg 2018-06-18 14.57.34.jpg](https://www.gardenpondforum.com/data/attachments/80/80033-ce233329d4b04ca622a0e823a7a2a0d8.jpg)