High tech can turn low tech.
I have a 100 Gallon tank that started off high tech a year ago. Slowly it's transformed into low tech. Never changed PL lights for one year so it got dimmer. I stopped adding C02 but made sure no surface agitation to gas off what CO2 there is. Stopped fertilizing. Stopped water changes almost completely - just top up. I just feed the fish plenty (thats fertilizer), removed most of the filter media (plants like ammonia). I change 40%water maybe once a quarter. Most of this happened without any plan in mind - just no time. Then I read Diana Walstad's "Ecology of the Planted Aquarium" and discovered it was a valid alternative approach. So far I'm very happy with the results. No significant algae. Growth isn't explosive and the "pearling" junkies among us would be disappointed with it. But plants grow fast enough - I have to trim maybe every 3-4 weeks and thats enough for me.
So yes Non CO2 is great for me. But which one is best depends on what you are trying to achieve.
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