[lee739]

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!

They are all essential, just the quantity you need varies - they are dirt cheap too - look into EI ferts, you may not need to use much, but should be able to buy all the NPK and traces/iron you'll need for a decade for $50 or so....