hello friends ;
currently am using a sump that i mad manually with a bio balls champer which always fille d with water , a friend told me that the bio balls must not be under water ,, the water must only pass over them !
is this right ?
thank you in advance
currently am using a sump that i mad manually with a bio balls champer which always fille d with water , a friend told me that the bio balls must not be under water ,, the water must only pass over them !
is this right ?
thank you in advance