You can't take a factor of a planted tank and call it the main variable. I know ppl doing this with microtox if light and co2 are good then=ferts, I've seen it done with co2, but co2 utilization peaks, its not what makes the tank. If it was, then everyone can do this. I've done a wide range of moderate to higher levels of co2 with not much or no differences, I've done it with lighting. I've seen nutrients cause algae and nutrients not cause algae. It doesn't mean you should go ei. My reason that ei works so well, is that the people successful with it have a wide range of plants, plants mass as well as algae busters. Algae busters, I think the reason ei works well is that you have super fast growing plants absorbing all that gunk in the water and as well you've got the reset with water changes. When I look at my planted tank, its consuming so much resources with the amount of water changes and materials I put into the tank. These plants are like ludwigia reds and pantanal, floaters, foregrounds...