He-heh! Good question.
Short answer: we're special.
But long answer is that information osmosis goes both ways. We have a lot to learn from them. And they have taken on some aspects of modern high-tech tanks as well.
Virtually all of them use CO2. But not at nosebleed levels like we do.
Virtually al of them add macros and micros to the water. But not at the nosebleed level like we do.
Many are starting to use LEDs. But keep it at lower intensities.
So they ARE using LEDs, water column dosing, and CO2 reactors.
But they are resistant to active soils like Aquasoil. Possibly because they uproot and move plants around a lot. And because
root feeding with capsules works well. Could also be a cost thing - I've heard that copper wire was discovered by two Dutchmen fighting over a penny. (If no one was offended by that, I've failed).
We (Americans) like MORE. We like MORE light and that means we have to have MORE CO2. Otherwise it's often algae city. So with more light comes more CO2. I've been operating my Dutch tank at 25% intensity and that gives me 60-80 PAR at substrate. NONE of the plants have lost color. But things are more stable and easier to fix. When I have a power outage, the Solunar controller auto-resets the BMLs to 100% intensity and then it feels like I'm staring into a car's headlights and the pearling looks like 180 gallons of champagne.
Overall, lowering light is more beneficial than lowering CO2. Not much to be gained by lowering CO2. But you get a lot of stability from less light.
And if you have less light, it is not as critical to have 90 mph circulation either.
The video was done by George Farmer, who once said 'You'd be shocked what you can grow at 10 PAR.' So, I doubt he felt the tanks were dim.
