Lol, I have also. But I have a solution that I'm going to try that you may want to too. Run a low tech with no co2, and keep the planting heavy. Basically from what I've read, with low tech you can go for months (it actually is better too) without water changes, as the plants remove all the nitrates. It is actually better to do less changes as adding fresh water (depending on your water stats) will gradually increase the water hardness in you tank. Even low tech plants can look great with hardly any maintenance.
I meant lazy in a good way! I actually have two tanks (my 8g and 2.5g that don't use CO2 injection and I have very good growth.
You're aptly describing Diana Walstad's methods from her book "Ecology of the Planted Aquarium". I'm familiar with it. I have a few things stopping me from completely going that route, though.
1. I don't use soil substrates as she advocates. I'm too cheap, and if the soil has clay in it, I'll swell up like a balloon (I'm allergic to clay and other soil types). I take a lot of Benedryl before I garden outside. I use inert gravel and laterite supplemented with rootabs. The soil she uses provides a source of carbon and nutrients, which is probably why you don't need to inject CO2.
2. My tanks aren't near a natural light source, which she kind of recommends as a supplement.
3. I bloody like fish too much. She recommends light stocking. Can't make me do that. I overstock.
Can't help it!
So my tanks aren't really low-tech in that sense. They are not high-tech either. I actually think that they are perhaps "old school" with an economical substrate choice. There, I said it.
Jeff Walmsley could be happy now.
(lower light, limited plant choices, uncomplicated CO2 injection, lean water column, I don't know, what else?)
That being said, I've kept successful high-tech tanks and have seen brilliant Walsted-style tanks, so I would say that there isn't a one method that I personally think is better. I picked the method that best worked with my financial situation at this time, or more accurately, I didn't actually pick
any method, my pocketbook made
all my choices for me. A well-trained,
tiny little pocketbook.
Sorry for the tangent, but there's been a lot of debate recently (in other forums, I don't think we've discussed it much at TFF, we are super friendly here) between which method is best, and some of it had gotten ugly.
llj