Well, easy carb is not really no CO2 in a sense, however...........
The tank looks nice and grows at a nice reduced rate.
With slower rates, sediment based ferts really do really well, easy etc, then you add some traces etc, and some fish and feed them, not much else is required. If you dose light to the water column, then the plants do well and the system is low input.
Many folks love that.
If you own 3-4 tanks, then having 1/2 of them like this makes more sense.
Nice job George, I prefer low tech tanks just because there's less equipment in the tank & theres also alot less maintenance if you have alot of tanks on the go.
If a tank can look that good without co2 injection & abit more patients the rewards are greater.