Hello...I have a 36 gallon bow tank with a Marineland 200 penguin filter with biowheel. The gray mid-level strainer cover broke when I was trying to remove it from the intake tube to clean it. I wanted to know if it is really necessary to use this cover to cover the mid-level strainer of the intake tube? If so I will purchase another one but if it is not really necessary I don't want to spend the money on something that I don't necessarily need. I never really knew what the function of the gray cover for the mid-level strainer is am thinking it has something to do with waterflow and filtration? Thanks to anyone who can answers these questions for me.
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