How much carbon is everyone using?

[The Grizz]

Originally Posted by lastlight

I use 1 cup ROX 0.8 per month on my 110 system. Hanna checker reads 0.

What are you testing for with the Hanna checker Brett?

[eli@fijireefrock.com]

I use 4 cups of ROX1.3 for my tank of total volume 350glns chaNged once a month.

[lastlight]

Originally Posted by The Grizz

What are you testing for with the Hanna checker Brett?

oh crap.

ummm... yeah i ALSO use one cup monthly of gfo. so umm... yeah. Forget about the checker lol.