Hi guys... I was just wondering about the small plastic piece that fits on the bottom of the aquaclear filters in particular the 70 & 110... I believe it's made to balance the filter and have it sit evenly flat against the back... Is that the only purpose? What is it really for and do I need to have it on there? I am missing it on one of my aquaclears... Does it create better water flow or something? I suppose I can dig up the manual somewhere and look into it. Personally I don't feel like it's a big deal to have that piece on but if it is then someone please enlighten me and I will try to locate and put it on. Thx everyone