A quick video showing how I put together a bog filter for an old concrete stock tank. Im using the tank as a pond and it will be home to some Murray River Rainbow fish, the plan is that they breed in here and I can use this pond to re stock my larger native pond.

You'll be able to find links to uniseals, energy efficient pumps and a PDF i have for building ponds with bog filters at- https://ozponds.com/pond-equipment/