I ad to leave the site unexpectedly so the rest of the details as follows.
I was limited in space both outside and inside the tank. Plus I wanted to save money on the CO2 system. I purchased a dual guage regulator and a 5 pound aluminum cylinder from a beer company. I purchased a drop counter and top quality needle valve pluss CO2 tubing online and that was it. I dispersed the CO2 by pushing the outlet of of the CO2 tubing into the intake of the Eheim canister. I chose Eheim as I feared other brands might not hold up to pushing gas bubbles through the filter 24/7.
It took me a while to get things tuned. My first setup I did not use teflon tape on the connections and my 5 pounds of co2 mostly leaked out in about two weeks and I had my first insane algae outbreak. So a refill and roll of tape ;later and i was testing to see what bubble rate I could run 24/7 and not crash the pH or deprive the plants. It took some sleepless nights but I finally hit on 1 bubble per second.
I also learned very fast how cold a newly filled co2 cylinder can get. I always brought gloves after my first fill, even in 100F heat wave, you have to wear gloves.
At my peak I had 13 planted tanks, but only the one above ran pressurized CO2. All the rest have and those that still remain still use Excel as a carbon supplement. I have pretty much used tropica fertilizers to the greatest extent possible. When they stopped sending the 5 litre jugs, I began using the Seachem individuals- nitrogen, phosporus and potassium with the Tropica trace/micro mix.
As for the farlos born in this tank,
I ran that tank for about 10 years. I had to pull up, cut in half and replant the top of the stem plants about ever 2-3 weeks. When I did baby tears I would plant individual stalks and three months later I had an island of baby tears rising up off the gravel on roots. I had to pull it all, throw out over 95% and replant some single stems again.
I changed things around to be able to try new plants as well. It got to be that this tank and the plants took more of my time than any of my other tanks and it had to end. But doing was a real gas, if you will forgive the pun.