I just bought 2 of these filters. I usually stay with Aqua Clear when it comes to hang on back filters But lfs was sold out of them. Owner said these Tital filters are just as good so I bought them. My question is that when I change my water will there be an issue with water level in the tank dropping lower that the skimmer slots. Will I have to turn the filters off? I always leave my AC filters running while changing water, as long as water level doesn’t go lower than intake tube. Don’t know if I can do that with these filters. Anyone have these type filters?