ANS Nano Block 5 (2pc/pack)
Highly efficient biofilter media with massive surface area for optimal biological filtration in aquarium systems.
Durable and long term usage, maintaining structural integrity for more than 5 years without shape loss.
Does not affect pH or mineral balance, ensuring stable water chemistry.
Compatible with both hang-in filter and over-filter setups.
Each block measures 4x4cm.
| Specification | Value |
|---|---|
| Size | 4x4cm |
| Usage | Hang-in filter or over filter |
| Material | Biofilter media |
| Longevity | More than 5 years |
FAQ
How does the ANS Nano Block 5 compare to other biofilter media in terms of surface area?
The ANS Nano Block 5 provides a highly efficient surface area for biological filtration, allowing for greater colonization of beneficial bacteria compared to standard media.
Can this product be used in both hang-in and over filters?
Yes, the ANS Nano Block 5 is suitable for use in both hang-in filters and over filters.
Does it affect the pH or mineral balance of the water?
No, the product does not affect pH or mineral balance, helping maintain stable water conditions.

Rose Gibson –
I’ve used the ANS Nano Block 5 in my 100-liter aquarium for over a year. The filter performs well and the water remains stable. No changes in pH or hardness. The blocks stay intact and are easy to clean. Great value for long-term use.
Lucas Martin –
Installed in my over-filter and noticed better water clarity within a week. The media holds up well and doesn’t break down. It’s durable and doesn’t alter water chemistry, which is important for my sensitive fish.
Chloe Marshall –
Works well in my hang-in filter. The surface area is good and the blocks are easy to handle. After six months, they still look intact. Minor improvement in biological filtration compared to previous media.