ZM Macro 50/75 Carbon (2 Pack) – Activated Carbon Filter Media
Designed for nano tank fish, ZM Macro 50/75 Carbon filter media uses high-quality activated carbon to absorb ammonia waste products that can be harmful or deadly to sensitive fish species.
This product helps reduce ammonia levels in your aquarium, supporting a healthier environment for your fish. It is part of a broader water management strategy that includes regular water changes.
Product Specifications
| Item | Details |
|---|---|
| Filter Media Type | Activated Carbon |
| Package Quantity | 2 Pack |
| Primary Function | Ammonia Waste Absorption |
| Recommended Use | Nano Tank Filtration |
FAQ
How often should I replace the activated carbon filter media?
Activated carbon typically lasts 4 to 6 weeks in a nano tank before it loses effectiveness. Replace it when the filter appears to be no longer absorbing ammonia or when the water quality declines.
Can I use this carbon in a freshwater or saltwater tank?
This product is specifically designed for freshwater nano tanks. It is not recommended for saltwater or marine aquariums.
Does this product remove chlorine from tap water?
No, this activated carbon does not remove chlorine. Always add Zoo Med’s ReptiSafe when introducing tap water after a water change to neutralize chlorine and chloramines.

David Morgan –
The carbon works well in my 10-gallon nano tank. I noticed a clear improvement in water clarity after a few weeks. I combine it with weekly 20% water changes and have not had ammonia spikes since using it.
Joshua Greene –
Good for reducing ammonia. I used it in a small tank with neon tetras. The filter runs smoothly and the water stays cleaner than before. I still do weekly water changes as recommended.
Emily Mackenzie –
I’ve tried several filter media, and this one stands out for its effectiveness. My fish seem more active and the tank feels more stable. Easy to install and fits well in my compact filter.