Well then, I would keep running Carbon then. Not as tempting anymore.
I’ll look into those Carbon. 500 grams is what you say you run on a 200 gallon? If so then that’s about 2 cups and 1 tsp. If I used ROX Carbon on a 200 gallon then it would be 1.25 cups. Maybe I’m not running enough which would explain why I need to replace more often. The BRS calculator also has a drop down for lignite or bituminous Carbon. I don’t know if the 2 you run are any of those 3. I’ll check.No idea - I use Red Sea Reef-spec carbon and Nyos Active Carb. My system is 200 gallons total, and I utilize approximately 500g of carbon every 4-5 weeks.
My water is just not that yellow. Maybe my system runs more efficiently or maybe yours has a higher bioload. There are too many factors to consider. For me my regiment works.