Question:Can you keep it in the tank the entire time or do you need to remove when clean?
Answer: You will want to change them out about once a year or even longer. If you have 2 lets say in the sump, replace one and then replace the second a month or two later. NEVER take out and clean. You will kill the beneficial bacteria and cause a spike in your tank.
By Amazon Customer on October 4, 2021
Question:Can i put these inside my 38 gallon shrimp aquarium or are they for inside a filter only?
Answer: We suggest to put it inside filter. Thanks.
By usmagob SELLER on December 2, 2021
Question:Do these float or sink ?
Answer: Sink.
By usmagob SELLER on June 17, 2021
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