No mention was made of the brand of filter the OP was/is using.Get rid of the piece of crap filter and go spend 20 or 30 dollars on acua clear 20 or 30.
Sorry to be mean, but those filters are garbage
While perhap's not liked by a few, or many,,they do what they were designed to do.(proper sized for volume of water).
I used these type' s of filter's for nearly 30 year's and managed just fine thank you.
Is no such filter as the one you noted ,did you mean Aquaclear?