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I have a 10g RCS planted tank. I have noticed for the last week the filter flow is slowly getting lighter to the point today I noticed it is beginning to trickle. I did take it apart (as I routinely do) and cleaned it, which it still isn't doing any better...so my question is...I have a dual sponge filter that is used in combination with an air pump in another tank....can I run the sponge filter only and it be sufficient filtration?