Sounds like you have a decent set up you'd still use less water with aquaponics. That link is a joke they make it sound like it's brain surgery.
Aquaponics is easier then keeping fish in a pond or aquarium. Sure there can be problems but usually from not setting things up right to begin with. Once setup and running it is less work then a conventional garden.
Their are hundreds of youtubes showing successful backyard systems up and running just fine with beautiful produce. You should do some real research instead of trying to reinforce your uninformed emotional bias.
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