I buy these regularly from eBay. Great price much cheaper than buying from a pet store. I tend to buy 4 packs at a time which makes them even cheaper.
Verified purchase: Yes | Condition: New
Working well in my aquarium, keeping the water clean. They do need changing fairly often, but easy to do and my fish are very messy, pulling plants to pieces.
Verified purchase: Yes | Condition: New
Keeps the water crystal clear in the tank
Verified purchase: Yes | Condition: New
easy to use cleared the water fine
Verified purchase: Yes | Condition: New
It does the job beautifully the tank stays clean for long periods because of its efficiency
Verified purchase: Yes | Condition: New
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