I am looking for some advice for my small koi pond redo. We are taking it from 1,000 to about 2,500 gallons and this time around would like to add a bottom drain. There are so many different ways I have read to do this that I am looking for some suggestions. .
I currently have a biological filter with an internal pump but would prefer to have less equipment inside the pond.
Ideally I'm looking To install a bottom drain, skimmed and external pump tied to my existing biological filer. Can anyone give me some direction on what equipment to buy? Bonus points if you can find it on amazon.
Thank you all in advance!.