If you have a sump up and running and everything is fine... the leave it as it is...
It doesn't matter that the Bio Bals are free, you already have the scrubbies... It doesn't matter which has a higher surface area, your system as is works just fine...
If you are startign a new system, use whichever is cheaper (or free) as either one will work just fine...
It doesn't matter that the Bio Bals are free, you already have the scrubbies... It doesn't matter which has a higher surface area, your system as is works just fine...
If you are startign a new system, use whichever is cheaper (or free) as either one will work just fine...
