I do water changes 2-3 times a week . My sand doesn't green and I clean glass. I don't want to have green glass. I feed 1-2 times a day. I keep the light 12 hours a day.
I think what Hidr means is that an aquarium that never gets any algae growth is usually not a healthy environment for fish. Algae growth is inevitable in a healthy aquarium and the presence of algae, especiallly green, in an aquarium indicates a healthy environment for fish. Algae also consume nutrients in the aquarium that, if allowed to accumulate, are harmful to fish. Normally, it's best to allow a little algae to always grow in a tank somewhere.
But, I, too, like the clean, simplicity of your tank.
I don't like algae so I clean glass when I change water.