I think that the quiet ones do pretty good, cant tell from the pics but they blow my fish, sand and algea all over the place. Already cut the temp down to about 78, going to cut back lights to 9hrs a day.
Was thinking about doing a 20% watercange and scrubbing all the rocks to get hair off...need to change things around anyway not happy with the way it looks.
Has anyone ever taken all the rocks out scrubbed them and put them them back in.....will it kill any of the good "stuff"???