Need Idea Of Probable Co2 Usage

[Tonyb111111]

As the title suggests, looking to get an idea of CO2 usage in grams for a 200 litre medium/heavy planted tank with twin reflected 39w T5's. Guidance would really be appreciated

 

[ian]

I'm using 500g cans at the moment on my 125 because i have some spare ones at the moment and they last me about 2 months, running at 1bps on for 8 hours a day.

When i get my Fe filled that usually lasts about 6-8 months @ 1bps.

 

[Tonyb111111]

I'm using 500g cans at the moment on my 125 because i have some spare ones at the moment and they last me about 2 months, running at 1bps on for 8 hours a day.

When i get my Fe filled that usually lasts about 6-8 months @ 1bps.

Thanks Ianho, again. As you can tell, I am still toying with this idea