Round rigid koi pond liners are freestanding and don’t need any support they can simply be put on a firm level surface and filled with water. Manufactured from recycled black high density polypropelene plastic, are extremely strong and have a 6mm wall section. They are smooth on the inside making them easy to clean. 10 times stronger than a conventional pond liner. Our prefrom round freestand fish ponds will enhance your garden. They are easy to install and can be part buried in the ground. We have a complete garden pond kits available and below you’ll find our range. We recommend using solar powered pond pumps to help keep the water aireated healthly when the sun shines. Using this solar powered pond has carbon negative effect.