Pond Boss Forums POND CONSTRUCTION Selecting a site Aqequate filtration system

I had a smaller pond years ago that was lined, and having a bottom drain helped me minimize labor when it came time to clean the pond. A bottom drain minimizes solid accumulation and automatically carries it to the filtration system instead of leaving it build up in the pond.

I agree, look at ArronM's filtration system. He could grow some HUGE fish in minimal gallons of water with great water quality.

Using a bottom drain, the external pump would be preferred. No sieve filter is needed providing the pump can handle any of the solids that might accumulate.