Well the CO2 thing isn’t really needed any more. The only reason why you add the CO2 is for the carbon molecule and new technology allows us to add a liquid carbon.
One of my tanks is a completely low tech setup – well except for the lights as I am running 3 T5s on there. The substrate is completely home made and the plants are mostly cuttings.
On my 800L cube I run 2X150watt 6700K MHs as well as 4X CFs, with full on CO2 injection (due to cost of liquid carbon for tank this size) and an Eheim professional3. The substrate is actually to rich and is causing some issues with murky water. With the replant I plan on redoing the whole tank is it is being over grown with crypts. The substrate will also be thinned out as well as capped with pool filter sand.
Regarding where to get the plants from, well now that is a really k@k one in SA. We have had one or two really good plant shipments come in but not much. In fact it has gotten so bad that we are awaiting our plant import permits to arrive this week. We should be landing 4500 plant next week for sale to pet shops.
let me dig out some photos....