Hi guys. I just bought an internal powerfilter called 2-10i. there was also one that looked pretty much the same but with a slightly different box called just 10i. They were the same price. What's the difference? They cost the same, have a 90GPH rating, are the same size, etc. I probably should have opened them in wal-mart before I bought one, but I saved the recipt so there shouldn't be any problems trading them out.
What's the difference?