Planted Tank Guru
Join Date: Aug 2009
Location: Green Bay, Wisconsin
As long as you have an established filter and you can do some WC's, I think you will be Ok if you change it all. Good luck!
"My next hobby is going to be tearing up $100 bills while simultaneously banging my head against a wall and flooding my basement."
"Ask not what the hobby can do for you, but what you can do the the hobby" - ScapeFu