I'm using from Saechem Flourish comprehensive supplement already.Yes! The t5 ho should work, the only issue I'm seeing, keep in mind I'm a plant noob too.. The ultra low light java's and the high light dhg, are you planning on dosing ferts at all?
I will probably get some ferts for the root growers too.
Just with the CO2 thing...that I don't know. I don't understand how to do it so I will try to avoid it..lol