Get into the 21st century!
OK what is the best CO2 system you can get (well at least could get). Here are my votes.
I have never been distracted by cost; so, Iíve been going at this planted thing for 5 years looking for the best and here are my choices for the best system you can get. This is my actual long term experience with these products.
Aquariumplants.com electronic CO2 doser
They advertise this as the best regulator in the world for CO2 and I agree! I have two of these One for over 4 years and they are just work horse. Designed for use with a controller they have never have end of tank failure. Did have a problem with my first one when it slowed down and they replaced it NQA.
Ultralife MC101 CO2 controller
I have two of these also and they are great. They have a read out to 3 places and have been dead on for as long as five years. In five years purchased three probes but probably didnít need to. Probes are available everywhere. Before posting this I looked to see if they are still available and I am not sure. I think they may have been bought out and the MC101 controller is no longer available.
Aqua Medic CO2 Reactor 1000
Just works! Get one.
I think the only other thing you would need is a back up control valve. OK and maybe a drop checker.
If you play with chemicals you should know some chemisty.