You always need to vacuum, although filters are intended to take up small particulate that clouds water (a matter of aesthetics) , filters are not really there to pull out large gobs of rotting gunk. That stuff should be removed from the tank often (water changes with vacuuming), before it gets a chance to metabolize into nitrate.
To me the biggest misunderstanding many aquarists have about filtration, is that its primary use is to pull out large stuff like heavy cichlid poop, and detritus. If that poop is in the filter, it is "not" out of the tank.
Unless it is regularly removed from the filter, or tank, its like sweeping the sh't under the rug, where it rots into a powerful stank, or (in reality) invisible chemical pollution.
This is a general statement not aimed at any one person, it just happened upon the post, and it seemed apropos.
For all you who understand this concept, I apologize for my incessant fulminating.
To me the biggest misunderstanding many aquarists have about filtration, is that its primary use is to pull out large stuff like heavy cichlid poop, and detritus. If that poop is in the filter, it is "not" out of the tank.
Unless it is regularly removed from the filter, or tank, its like sweeping the sh't under the rug, where it rots into a powerful stank, or (in reality) invisible chemical pollution.
This is a general statement not aimed at any one person, it just happened upon the post, and it seemed apropos.
For all you who understand this concept, I apologize for my incessant fulminating.