Since you already brought it up, Henry...

One question I was going to ask before I actually start my non-CO2 tank is: Can I get my tank's plants fully established with CO2 first? I was thinking maybe only 10-15ppm CO2, since I would have low light -- and also use light EI dosing (perhaps 1/3 normal). You'd have the best of both worlds: fairly quick tank establishment, then after weaning off of CO2 slowly, you have a low maintenance tank.

Maybe if you get some new plants, you could even crank up the CO2 again occasionally to get the new plants up and running quickly. Of course, now we're complicating things again.