Negative Positive
Title: Excellent product, but save your money
Review: I love the Aquaclear filter and this sponge does a great job of keeping the water clear. However, there is no reason to replace the sponge unless your original one gets damaged. During your weekly water change, rinse and squeeze the sponge in the water you take from the aquarium. It'll last forever this way and you'll keep the beneficial bacteria in the tank where it's going to keep the ammonia and nitrites under control.
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