a friend gave me wet n dry filter full of bio balls. the filter was being used in a 125 gal
salt water tank. I got a 125 freshwater tank, so here are my questions:
1- is a wet n dry good for a fresh water tank? are they worth it
2-how should I clean this filter before I use it in my tank?
3-should I clean the bio balls and how?
any advice will be greatly appreciated.....thanx