See Paul's  water features on Greg Wittstock, The Pond Guy:

• No More Concrete Ponds: https://www.youtube.com/watch?v=8xwvq3VkByo
• Epic Catio with Koi Pond: https://www.youtube.com/watch?v=cXCx1EbRNlA
• Pond Renovation for Wedding Venue: https://www.youtube.com/watch?v=3ds0Lyaq5Iw

Visit The Pond Gnome: https://www.pondgnome.com/

Visit Aquascape Inc: https://www.aquascapeinc.com/

Become a Certified Aquascape Contractor: https://www.aquascapeinc.com/professionals/become_a_certified_aquascape_contractor

Attend Aquascape University:  https://www.aquascapeuniversity.com/