If I only have money for one, which is more important to get Now, for my tanks...
Filter media
or
water purifiers (to do water changes)
I.e. Is it better to change the filters and not do water changes, or leave the filters dirty and just do water changes?
(plz assume that I will be buying the other thing as well, only, later.)
Filter media
or
water purifiers (to do water changes)
I.e. Is it better to change the filters and not do water changes, or leave the filters dirty and just do water changes?
(plz assume that I will be buying the other thing as well, only, later.)