Yes opposed means NOT. So basically I am saying that MOST (keyword most) of the bacteria live in the filter and NOT (other keyword not) MOST (once again first keyword most) of them in the gravel, but some nonetheless.
Yes opposed means NOT. So basically I am saying that MOST (keyword most) of the bacteria live in the filter and NOT (other keyword not) MOST (once again first keyword most) of them in the gravel, but some nonetheless.