Hello guys. I'm kinda new in saltwater aquariums but i´ve had freshwater tanks since i was a kid. Im from Argentina, I got a 80L mixed reef since september and now im moving to a larger system (250L). At the moment i don't use skimmer and my nitrates are 0.2PPM. Besided im buying a skimmer bubble magus to get the tank more oxygenated. What is the difference between Bubble Magus C3 vs C3.5?
