[anastasisariel]

Thanks for the reply Diana. All of those nutrients sound quite expensive. If i have a low budget, what are the "essentials" for this particular tank? C H O? Carbon Hydrogen Oxygen?
Also are you saying i should run 3 reactors? I have two currently. And pressurized co2 systems are too costly. Like 500 dollars for a system!

Hey sir, it's not as bad as you think. You can order the EI ferts in a set from greenleafaquarium and have everything you need. When I did diy co2 I actually used 2 2liters and Was using a powerful reactor. I changed a bottle out every week and I venture to say I probably had better dissolved co2 than some others with pressurized co2 and cheap acrylic diffusers.

EDIT: just realized this was a 75.. I,would never try diy co2 on something that big...