I wouldn’t think a strip across the outlet would do anything about increasing the trates at all. It would just help to defuse the air out of the water before it enters the tank. The cheato will take care of that stuff if it growing well. I just have mine stuffed in the side of the tank behind the rock and I remove a chunk when it fills the side of the tank. I have a minimalist approach to the tank thing, if it aint broke don’t fix it. To be honest I never change any water unless I am doing a full tank cleaning and that’s 2 to 3 times in the year. The cleaning crew I have in the tank seem to keep things looking okay since I have no external filtering at all everything stays in the tank in some form or another and any buildup in the rock and gravel need cleaned once in a while.