THIS IS A GREAT PLACE FOR YOUR TAGLINE.
Having a long experience and passion on koi and captive aquaculture in particular, I have acquired savvy needed to design your pond, in any type of filtration system.
Check out my pond here. Many people have openly admired it as a crystal clear watered pond, and as a matter of fact it has resulted prizes in koi shows. However, I secretly know what can be improved.
Therefore, my design for your pond will be an improvement of this amazing pond.